I tested both g1 and g05 side to side, on my harimoto super alcs. both are great backhand rubbers, but lets compare
feeling: g05 has the spring sponge, it is a unique feel and different to esn rubbers. it feels quite nice in how the ball is launched from the rubber, like a trampoline
in comparison, g1 shoots out more predictable but very clicky, nice feel
short game: g05 is kinda slow and dead, so it is good here. g1 us clearly better tho, the ball stays really short and low on pushes
blocking: both good, g1 has more control for sure, its very clear
looping: g05 much easier to use on low and medium power, nice stretchy top sheet, the rubber catches the ball no matter what, you can brush with topsheet or use more sponge, it just works. spin is good. on high power, the sponge doesnt let you add more power, not ideal for power shots
g1 is soooo linear, it just makes sense. what you put into the shot, you get. however, you need to make sure to engage the sponge. the rubber doesnt feel hard on power shots, but on low and medium power, it can due to the hard topsheet. if you dont engage the sponge somewhat on low - medium power, the result is not good. the ball can slip on thin brushes or you get a high arcing ball with no spin. confidence is key with g1, you dont have to rip every ball but you need to have trust to engage the rubber. if you do, results are great: good spin, safe arc, stable linear feeling, clicky feel. on high power shots, g1 clearly outclasses g05
smashing / punching: g05 solid, g1 better because the hard topsheet lets you perform smashes with confidence
durability: both are one of the best in terms of durability
conclusion: both are very nice rubbers for amateurs, especially on the backhand. if you are a bit hesitant or passive on the backhand, and tend to brush alot in order to get the ball safely over the net (nothing wrong with that in official matches), take g05
if you have confidence in your loops and are comfortable to hit right into the sponge, go for g1. g1 is even or better in basically every aspect if the technique is there. both arent easy to play but also not hard to play rubbers. g05 is a bit more forgiving but also has a lower ceiling. I am a fan of both rubbers
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