05-17-2012, 08:26 PM
Count me among the fans of mixed-tooth (a.k.a. vari-pitch) bi-metal blades. I have both a 10-14 and a 6-10, the Lenox Classic. I use the 6-10 for almost all aluminum, and anything else over a 3" cross-section. The finer 10-14 is good for most rounds under 2-1/2" and thinner cross-section rectangular, square and structural shapes.