USATT 1200 is too much low to be able to use Rasanters, Vega Pro/X and somehow even Rozenas. It would be better to stick to Vega Euro, Stiga DNA Future rubbers, or that would be really soft Rasanters like the 37 or 42, not much !
Honestly, in USA, if we look at a group of 100 players in the range of 1000-1500 USATT who have been that level not improving for 10-40 years, then examine each individual's shot making, footwork, impact, biomechanics, tactics, adjustments, etc... we begin to see some common data.
What I see in nearly every case is that it would not matter if these players used old Sriver or the fastest Diginiski... they play at and stay at that level due to serious under-development of the technical, tactical, and mental things I discussed.
One example is a 70 yr old gent who had a BTY ALC blade with Tenergy rubbers... he asked me if his bat was good or bad for him... I had a hit with him and saw that he was so lacking in technique that it would not matter what he used, so long as he was happy with it. The equipment had very little to do with how often he landed the ball on the table, it was his poor technique and I am being generous. I told him that his bat was just fine for him... he has very poor biomechanics and needs a faster bat to make some kind of pace... and that it would not matter until he got some years of professional lessons.
This gent was NOT going to spend the money on a coach and the time to go from 600 to 1600 USATT... he prolly didn't have that kind of time left on his clock anyway... nor the budget for lessons, car, fuel, and equipment - he was best served simply enjoying his time in the TT hall with what he had.