I hit with a TGK 238.4 this weekend modified with silicone and lead and I was very underwhelmed. Admittedly my expectations might have been a bit high as I was expecting a ton of plow through and a smooth feel. It's my friend's racquet and I haven't put it on the Tuning Center yet to get the specs but after about ten minutes I went back to my YT Rad Pros which felt much more stable and soft. The pro stock had a tinny feel and was more harsh feeling than my Rad Pros.
I am unfamiliar with all the codes and the playing characteristics they designate so maybe the TGK 238.4 is a stiffer pro stock which doesn't work well for me.
(4) Volkl PB 10 Mids
Babolat Tonic+ 16/Babolat RPM Team 17 @ 51 lbs