On the Ryobi, that's the impression I got, too. The 5 1/2" was junk, and maybe cheap 5 1/2" saws just are by their nature: tiny blade to overheat quickly, tiny motor, etc. I can't help but think a 6 1/2" will be an upgrade no matter what brand I buy. The 6 1/2" came out very recently, and one of...