I have i20's in my bag right now and I can attest that they are the sweetest irons I've played. They are actually a bit longer than my previous set, (I'm trying to get the distances dialed in still). More importantly the sweet spot on the i20's is massive. I went from a blade to the i20's and the difference is crazy. I almost feel guilty hitting a ball off center and then watching it fly as if I had struck it pure.
I've never hit the g20s because the heads are just too oversized for my eye.
i20's look great at address, although the offset was slightly irritating at first. Now, I love the offset when I'm taking 3i off the tee.
I would rate the i20 irons 10/10.
[This message has been edited by AgPrognosticator (edited 4/17/2012 9:40a).]