So, here we go!! took the plunge and bought T19, 1.9mm black, T05 1.9mm red & a Viscaria!!Previously I had tried T80FX Max sponge, this was when I 1st started playing again, so I wasn’t where I am now technically and was ‘rusty’ to say the least!!, I have also used D09C 1.9mm sponge. I have played with T19 for about 5 hrs v robot and serve practice.I will also try and compare to T05 and D09C where possible and Rakza Z [RZ] (rubber I been using for a couple of months)Top sheet is grippy, not sticky.Bounce test - typical spring sponge - very bouncy!! D09C has less bounce because it has slight tackiness.Serving - Very good, once I got accustomed to the additional bounce I found that I could control my serves pretty easily. Spin levels were high = to T05, D09C and on average slightly better than RZ, but when I caught the ball really well ( not that often!! ) RZ had a tad more spin.This was evident for example with ‘ghost’ serves, BH and FH. T19 produced slightly better spin on serves with average contact, but with optimum contact, fast light brush, both T19 and RZ brought the ball back to the net, RZ had a tad more reverse acceleration. For consistency T19 was slightly better, T05 was similar, D09C is similar to RZ in that there was slightly better spin on perfect contacts.Short game - again, once I was use to the bounce, in general, short pushes were easier than I thought they would be, care has to be taken though, as soon as you use a little more force, the bounce kicks in and the ball can go longer than you may like. T19 and T05 are similar, I had quite a lot of net cords that dropped over nicely!!!!! Compared to RZ when playing really short push returns to backspin robot serves. More short pushes went in the net with RZ😖!!Fast pushes were fast!! Both T05/19 quicker for the amount of force imparted than RZ, very direct, good spin.push variations were good, no spin, light, heavier back spin and slice side/back spin were all consistent.D09C is in between T05/19 and RZ, slightly less bounce than T05/19 slightly more than RZChopping, yep that’s right chopping!!!! Considering that my table is in a garage with limited space, max 6 ft behind the table and the robot pumping reasonably fast topspins at me!!! Chopping with T19 was good, now, this may seem strange compared to what I’m going to say later. When chopping T19 had a higher throw than T05, to my surprise chopping with T05 was really top notch, lower throw and a low flight, very direct great spin. Both T19 and T05 produced good spin, I found that T05 had, for me better control and consistency when chopping, it suited my chopping technique very well.Once I adjusted to the higher throw, I started to get a few more low deep fast chops with the T19 as well.with RZ it was harder to keep the ball low and fast, D09C was more like T19 slightly higher throw. For chopping T05 was way better than the others for me.Butterfly may have missed a trick here!!! I think T05 with a 1mm thick spring sponge would be a choppers dream!!! Topspin vs backspin, so now the opposite seemed the case for me!! T19 had a lower throw than T05 when playing topspin shots, both BH and FH.when I first started this exercise (FH) I was using T05 and doing ok, good speed, spin and nice arc, twiddled after 20 or so shots and put the next 7 - 10 balls in the net with T19!!! Adjusted bat angle slightly and got similar results as T05, twiddled again and put the next 3 balls off the table with the T05 !!! So for me T19 has a lower throw than T05, RZ has a higher throw than both. RZ feels much softer, seems as if the ball sinks into the top sheet more. T19 = mid low throw, T05 = mid throw RZ = high / v high throw.Top spin drive and counter top spin - T19 was crisp when countering, good control and speed - pretty quick, very direct. T05 was very similar, tad quicker. When counter hitting both T19/05 remind me of R48/53, definitely a strong point of these rubbers.Stepping in and playing aggressive fast top spin drives were really very good for both T19/T05, this I really enjoyed!! Fast, good spin and forward kick for both, but again T05 slightly quicker. Both generally better in this department than both D09C and RZ, ( D09C is no slouch though!! Still pretty crisp, Neither is RZ, but the softer feeling RZ just doesn’t come over as being as crisp)FH and BH top spin / loop - both produce great speed and spin, with good kick, T19 comes over as having a little more control, I could place the ball slightly easier with the T19. D09C is slower has a higher arc and from memory is a little more spinny, RZ has a high arc with more dip, just as much spin.I liked looping with both rubbers, T05 would be preferable on FH, T19 on BH. That little bit of extra control on BH and that little bit extra loop kill potential on FH !!!!Blocking - controlled , crisp and fast with both, more control with T19, but I only block practiced for a short period of time.What I did notice, in general, is that T19/05 are a little less forgiving than RZ/D09C, if I was a little out, timing wise, or out of position, late to the ball etc then there were wider errors with the T19/05, this is partially due to the grippy top sheets compared to the tacky top sheets and the closeness of the sponge hardness to that ‘magical’ 50 degree sponge hardness that I struggle with, when in conjunction with grippy top sheets !!!Now ‘DWELL TIME’ ha ha here we go!!!I’d by lying if I said I hadn’t read the reviews on the ‘review’ posts, and watched both Dan’s and Brian’s video reviews!!!So far, taking into account my lower level of standard than both Dan and Brain !!!! I can safely say that the difference in ‘dwell’ between T19 and T05 is FOR ME pretty small !!! Does T19 ‘hold’ the ball longer? If so it seemed minimal to me? The difference that I could feel was small.🤔 Now comparing T19/05 to RZ, there’s a BIG difference, I can feel the ball sinking into the RZ top sheet so much more!!I think the sponge hardnesses are pretty similar, within a degree or so, Butterfly seems to have a better quality control regarding sponge hardness, Yasaka give a wider margin for their sponge hardnesses. if the sponge hardnesses are similar then it’s RZ’s top sheet that is softer. Pimple pattern, size of pimple etc all play a part as well. For the record RZ was mounted on a Nittaku Acoustic inner. Regarding speed of the set ups, I tend to relate landing depth of shot played with similar force.So an average FH topspin,Both T19/05 on the Viscaria landed within 150 mm of the end of the table.RZ on Acoustic inner landed around 450mm from the end of the table.RZ on Acoustic (all wood) landed around 750mm from end of the table.T19 is a quality rubber as is T05. I would be happy to use either of them!!!