mpeterson
Team THP for Life
I don't know about the most popular irons on THP necessarily. They're definitely solid GI irons though that have helped a lot of guys play better golf.
Tappin' from my Samsung Note 3
They definitely have a cult following here. I've hit them and like them, but prefer the more traditional GI style irons.
It's funny, I got the ping G series because I hit it better, and I figured I would get used to the look. I'm finding that I've now really come to prefer the offset and chunkiness.