To not go entirely offtopic, let's put my opinion about the main difference between PK50 and LAC first.
PK50 is significantly more sticky (not only out of the box but also after several month).
The speed i would generate with LAC is higher (which one could attribute to the harder sponge of the LAC).
In terms of spin it is hard to judge, because all shots with the PK50 would have lower speed and a "better spin to speed ratio" on average, compared to the LAC. The PK50 would be much more demanding to play (on the forehand) though.
It is easier for me to generate speed with the LAC (which you would not expect, since the PK50's softer sponge).
i would like to hear your feelings about the typical ball PK50 gives you. I get you feel secure since it lands on the table with low effort? So it limits angle and timing errors?
i would say that it is mainly the angle that i need to care less about since regardless of the angle the ball jumps out of my bat, the power or speed that the ball will have will not make it go long without me actively giving power into the block. Even holding it with a rigid wrist is enough to dampen the power.
But what about the follow up? In your video the 2 passive blocks with PK50 landed on the table but timing, spin, height and length seemed really easy for an oponent to attack.
If the opponent knows how the ball will return blocked, it might not be an advantage for me, but intuition tells most players to step back after looping, because they expect the ball to get returned longer, which does not happen with the PK50 and hence the opponent rather stands too far out to hit the returned ball on its highest point, hence failing to be able to put more power into it.
I see people blocking with a similar bat angle to mine using faster tensors and the ball goes flying out.
fyi: most of these clips were from my very first competitive match day and i feel like this "odd" sidespin introduction gave me a little more chance than i should have had. There were two guys i had to play against were having basically 100 and 150 points more than the average of the league i guess. I totally expected to lose to both, but i one one game 3-0 and lost the other closely 2-3. For not having any tactic or strategy i was satisfied.
i am pretty sure these balls would at least land on the table with the pk50. Of course one could always argue that one would simply need to adjust the racket angle with a different rubber, but for me personally i think "dont fix whats not broken". i have enough things to work on and anything "kind of working" right now will be taken as granted and something i can improve on if many other things are fixed.
If you are playing a match around your current level, is that a ball that gives you some advantage? What ball qualities are you valuing more? This is an interesting topic when comparing rubbers i think. Individual Feeling its a key factor
Another thing that for me only works with the PK50 is a block/punch like shot that introduces sidespin into a rally.
I usually do this if i am in a rally and already looped with the opponent easily blocking it back or me being out of position and the ball coming straight at me (my center not ideal for my forehand and not ideal for my backhand because it would be too high). The opponent is often surprised by the sidespin and expects a certain amount of topspin to be in the ball which is not, hence the ball dropping to the net or if the go for a more active ball it often enough lands next to the table.
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I am sure better players with a good touch will be able to do this with other rubbers as well, but i surely don't.
Since it does work often enough, i dont see myself changing this part of my game for basically zero benefit.
