Gambler GXM is made specifically for hitting, chopping, and aggressive style of defensive play. The pips are very small and widely spaced. GXM has much more control when hitting than long pips yet still manages to produce a strange dead ball to elicit mistakes from your opponent.
Ratings based on a 1:100 scale (pro competitor version product)
Great rubber for spin to dead ball play. Since it generates spin it is only ok for serve return. Blocking is easy and accurate
Using 1mm sponge. This rubber does not make much spin. It plays like a true medium pip with spin reversal on flat shots and no spin when stroked. I found it subpar for chopping. Shots normally made with long pips do not work that well either as this rubber does not have sufficient spin reversal and is too fast. So why the 5 Stars? This rubber is by far the best hitting/blocking rubber I have ever used. It is a hammer that you literally whack every shot down with. If you have an unconventional forehand like myself that hits/blocks vs loops or would like an aggressive backhand for close to the table play, I highly recommend this rubber. I feel this rubber won't work for the majority of players due to the limited shots it can make. But for the ones it does work for, it is amazing.