The tibhar vari spin rubber is a rubber that is supposed to be allaroound, but i think of it more as a defensive type rubber. It is really spinny, you can create some great spin on chops and serves with this rubber. Its quite slow though, has kidn of that floating feeling when you try to loop, so i say that it is not optimal for looping. The ball simply does not gain enough power or speed from loops. It is very good for blocking though. With some good feel and technique, you can create some very awkward spinning blocks that can really trick your opponent up. I say this rubber is more for the defensive blocker
The answer to Tackiness series by Tibhar. It´s really similar to Tackiness D, it´s a durable and grippy during a long time. This rubber will cover a long range of player from beginners that need a slow rubber to learn and improve the basic technique and varied strokes to mixed pimpled players that use to sweep the paddle. Besides, it´s enough power to make attacks with enough power if needs to. Glue ban era doesn´t mean to forget classical regular non tensor technologies.
To sum up, a nice classical rubber for classical players.