Very few players better than B, or 4.5, would choose the T rackets after trying them. The exception is Connors, of course.
I can probably name over 30 decent players who tried that racket, and none used it after the first or second hit.
Torsional instability was only one of the problems. Lack of air drag was, for me, the worse problem. Just totally inconsistent!
Notice, thru all the years after the T's, nobody makes a racket with reduced air drag by going nothing on the throat. Prince Mono was horrid for guys with strong serves and fast swings.