Apparently Garcia and Woods are using the new "J" driver. I just bought the "D" and am in love with it. Plus it only cost £199 with the graffaloy shaft which is brill.
I am no fan of the thin-face drivers, in fact I've got an ERC2 on the bench. IMHO you get little or no feel when you hit the ball as the spring effect takes it out of your hands (haha). If you disagree I'll do you a good price on the Calloway!