I just did the reverse. Played a Guild match with RiftRaft, and he swore by the TM irons. I figured it was worth a shot, so I switched and bought all the wedges to fill in my gaps (110, 90, 77, 50). After playing about 30 founds on both Kia and BPB, I came to the conclusion that for me, personally, the G10's are clearly better. The higher trajectory makes a huge difference - I play with great balls, but the TM set didn't hold the green nearly as well. I agree with all the previous comments - BPB 5, 15, 17 are different with the G10. So are Kia 4, 5, 8.
I use the following clubs - TM 3WD (235), G10's, TM wedges (90, 77, 50). With this set-up, I generally cover all the gaps:
PW 115, PW punch 98, 90, 77, 90 punch (71), 77 punch (63), 50, 50 punch (41). This gives you the option to go for eagles at Kia if the wind works, plus you can pretty much cover all the gaps from 115 down. Can't do that with the TM iron set.
GL YJ, and everyone else! See you all out there.