Needing some ideas for new iron set

[Lance916]

I am a 30 year old who has gone from "a few times a year" golfer, to really dedicating my time practicing and studying the game the last couple of months.  I have used a 1990's set of King Snake (clone set) irons with regular-flex shafts for awhile now.  My swing speed is approx. 92 mph.  But, I don't feel that I'm hitting my irons as far as I should be.  For example, on a good day, I usually average 155-165 yards with a 5 iron.  I want to take advantage of today's technology and upgrade my irons to see if that helps.  However, it could be my swing that needs work, but I do feel like I'm making great contact with the ball.  Could it be that I need a stiffer shaft?  Any suggestions?

[Golf'nBiker]

Lance, I can't reply as an expert, but only from my limited and recent discovery.  My swing speed is 93-95 as well, and learned that w/a stiff flex shaft on a driver I was 86-88 swing speed.  Don't know if that is usual, however, I got rid of my old driver (stiff) and bought a new one w/a regular flex.  Seems to be working great for me.  My irons are regular shaft as well.  hopefully one of the club fitter members/instructors can offer a bit of help. G'luck.

EDIT:  My new irons are stock Wilson-Staff Di11's and they are very good clubs.  With their loft angle, my PW is the same as the former Ping G10's 9i