Re: 2009 taylor made burner - choosing the shaft flexI was in the same boat as you about 2 weeks ago. I've always hit a 10.5* Driver so that was the first TM I tried. R9 10.5* R Shaft and the ball sprayed everywhere, changed to a stiff shaft and the trajectory was way to low for me. The rep spent more time tinkering with a wrench than I did hitting the ball. If I have to take a toolbox with me to the course to adjust this club I don't want it so I put it back. I then grabbed a 9.5* Burner R Shaft and it hit better as far as direction but something felt different at the bottom of the swing close to impact. I can't put my finger on what exactly it was but it felt uncomfortable, it was almost like I was coming under the ball instead of through the ball. So I put that back and the rep handed me last years Burner, 9.5* R Flex....and I smoked it! 8 out of 10 drives were rifles right down the line. Trajectory was perfect, I could play both fade and draw if I needed to, swing speed was up, I gained 11 yards of carry over my Cleveland Ti460 Launcher, and it was $100 cheaper than the 09 Burner. So needless to say I walked out of there very happy. Beauty is in the eye of the beholder, I had so many people tell me the 09 Burner is better than the 08 when I found out for myself this is not true. Shafts are going to vary by manufacturer, some manuf. reg flex could be close to someone else's stiff shafts. I was somewhat pleased with the ReAx (Fuji) shafts in the TM drivers, they provide very good feedback and perform the way I need them to when I need them to (so much so I bought the matching Burner 3 wood yesterday). Good luck in your search.
By the way: My average swing speed with the 08 Burner with R. Flex was 95 mph. 09 Burner with R. Flex was 93 mph. R9 with Stiff Flex was 91 mph.