I have played a 905R with made for Titleist fujikura speeder stiff for 6 years Could pop it out there 250 on average with a real ball and never felt the stiff (albeit a made for Titleist stiff) was too much.
The Pro said I should go with the R flex. That at 54 my swing isn't going to get any faster and being on the low end of stiff and mid to high end of regular it was the better choice. Added that after 15 holes or on chilly days I'd get more out of the regular and be over swinging to get the stiff to work.
Bought the R flex and don't plan to play for a week or so. Would appreciate input on whether the R is the right choice based on my swing speed or I should have gone with the S flex. Want to be certian I have made the correct choice. I have always been willing to give up a little distance to have a tighter dispersion. Always easier hitting a green from at 170 from the fairway than from the rough at 155. Both flexes felt good. Do like the crispness of a stiff, but I was ready to go either way based on consistent speeds and distances. I wish I'd taken my own balls to get a real feel and can still do that if I still have question marks about the R slex.
Its not like I boast or brag about flex. Its just a big change and want it to be the right one. Perhaps the time is right. Its more about always being a stiff and worrying regular may cost accuracy.
As for irons, play Titleist ZB cavity/muscle mix irons with project x 5.3 shafts. 7 iron distance is 150.
Comments and advice from R1 players or those with input on flex in general appreciated.