I may be picking up a set of TM Rsi2 irons. They come with KBS 105 Tour in regular. I'm enjoying less and less swinging S300's, and according to the guy at GT, I'm borderline reg anyway:

85mph 7i ss
Slow side of Moderate tempo, slow transition to downswing
Lots of acceleration through the ball
smaller divot

Unfortunately, trying these out before buying them is not an option.