At least for H3, pro version has 41.5 degree.... But the pro version doesn't mean better, just means more specific and maybe with more precise manufacture process.
Consider the hit/friction ration from 100:0, Brushing is on the other end of hitting and it is important to learn. I believe most amateurs have problem with brush motion like I used to do. And without brushing, one just can't go to a higher level.
Slow spinning loop is a good way to learn to create spin in loop. Powerful loop can't be learn without this step. A good coach would be able to tell you this, not just that it is not useful. QSB also teaches how to create spin with the brush motion, it is just that brush motion is not enough to...
Banana flick probably is not an optimal way. I think a half backhand loop, half banana flick is better? Starting backswing a little away from the net and moving close to the coming ball?
I have a little problem with a shovel side under to the middle. Backhand loop is not really working easily against it.
For half long, I feel a long push is a better return for most amateurs.
Guys, what would the boosting result be like if I mix baby oil with FTL or haifu national yellow oil? What booster do you recommend to mix together with baby oil?
FZD was known to use a viscaria with Stiga handle. And AJH was using a W968 for several feeders while his TMX i pro is getting more popular. I would say that it all depends on the players and whether the manufacturers put a strict requirement on it.