I just never got comfy with the TXP/TXE; but I could use the TXM(aster) for the rest of my life if I had to. The 660 series just fit me like a glove even though I enjoy hitting 600-ish rackets. The lighter weight(usually) and the more open string pattern just fit me better.
Spent a couple of years with the PT 280 and could certainly use that in a pinch.