I've improved alot with my "super game improvement" clubs over the past 2 years. Truth be told, I'm a bit better player than my handicap suggests - putting absolutely KILLS my scores & no telling how many strokes I lose each round due to my obvious ineptness at putting. Anyways, I don't disllike my irons, and I do like the forgiveness they offer on the occasional toe hits with the longer clubs. Most importantly, I don't like the big blocky oversize look of them, but they do perform well.
I have recently been looking at upgrading to "game improvement" class irons ... Taylormade R11's or Mizuno JPX-825's are the front runners. I definitely still need some degree of forgiveness, so I'm not looking for a players class workable iron set. I'll get fitted (helped me so much with my driver selection, I'm now a believer in getting fitted) ... I just don't want to make a costly mistake & wind up with a club that hurts rather than helps me and regret it.
Curious how you knew it was time in your game to upgrade the category your irons ?