chop 1 weeks ago
The 999T-1 is classical Chinese rubber. It is spiny and slow rubber. Tackiness is slightly less than 999T but the sponge a bit harder and capable to generate heavier spin (10-15%) more than 999T with proper technique.
The 999 T-1 has more gear (25-30%) than 999 T version due to the harder sponge (medium hard).
999T-1 is more for advanced players, in my opinion, because to generate heavy spin your technique must be very good (China style), thus, intermediate or beginners will find this rubber difficult to play with. European style players might not like this rubber at all, because of lack of skills and understanding how to use this rubber effectively. But, if you are Chines style player and have great physic and power, there is nothing to worry about :). Also, choppers and defenders will love this rubber because of control and heavy spin.
Compered to 999T, 999T-1 is slower (5-10%), less tackier(5%), has harder sponge (30% harder) requires more skills and effort to generate heavy spin and better at chop, push and smash. Also, T-1 is better at service receive. Durability is amazing.
Both 999T and 999T-1 are great for loop oriented game.