Lately I've gone through a swing change that increased my angle coming into my irons. I read an article one time about how pros swing no more than 80%. I started to do so as well and lost a significant amount of performance out of my irons. I decided this week to throw that new little gem of knowledge out the window and go back to putting a little muscle back into my swing (I say little because that's about all I can put in). My ball flight is much better and I'm hitting more accurately again. Maybe 80% for the pros is still harder than my 95%. Has anyone else had similar results? If so, which is better?