I've had my AP2 2008 irons for about seven and a half years now. In that time, I've updated my driver, 3 wood, hybrid and putter.
I check in with the club professional from time to time for him to assess them in terms of general wear and tear and shaft performance. Needless to say they've been re-gripped loads of times.
About a year or so ago, I spent some time on the range with the professional comparing newer irons (Cobra/TM - he doesn't stock Titleist) and his view was that there was no great performance improvement switching to newer irons. His assessment was very reassuring but I got to thinking that surely the idea of newer technologies is that it is supposed to ball striking easier.
So before I go and and spend shedloads of money, what do you do? Do you continuously buy new technology or stick with your old, tried and tested sticks?