I've used folding saws from Gerber, Corona, and Silky. The Gerber was the worst I've used so I purchased a Corona and I thought it was a great saw. I recently purchased a Silky super Acel 210 just to see what all the fuss was about and I'm glad I did. That saw does not bind, cuts super easy, and does not get warm. I really am puzzled about the last part, which seems to indicate that there is no friction on the blade and the wood it cuts. I've used it now on two outings in which I cut about 15 to 20 logs with an average of 8" logs. I tested the corona again and it cut decently, yet binded on me every now and again. The silky performed flawlessly.
I'm really impressed by that saw. It's way more in price than any other saw I've used, but justified imo.