I understand that this has been a question asked all the time. Mine is a bit different because of my health condition. I currently play with an AP2 710 with oversize grips and a Project x 5.5 shaft. I have been diagnosed with rheumatoid arthritis and it is hard for me to practice. It almost takes all my energy to just play one round a weekend. I am a 31 handicap player when my body is in pain but sometimes I hit the high 80's when I have no pain which is very seldom now since my disease has progressed.
I went to a golf shop and they told me I should get rid of my AP2's and go for maybe a TM RBZ irons. I am not a fan of TM so I was thinking of the AP1 however holding the clubs side by side there is very little difference.
Do you think switching to an API with graphite shaft would help? I use the stiff flex in my woods. I tried the regular flex and I could not get consistent results.