I've started ordering the #1 and #3 Pegas MG blades by the 144-pk from Bear Woods. FD blades are good, but they tend to cut slower and seem to pull to the side a few degrees, depending on which direction I have the blade in (their reverse-cut blade doesn't have reverse teeth at the bottom, its like every other tooth is reversed...makes it easy to know which direction to mount the blade, but slows the cutting a bit, it seems). Not a problem, but I have to adjust for it.
Breaking blades, I've found, is usually less of a hardware problem and more of a meatware problem. Overtightening, too loose, mount not cranked down tight enough, or I've run the blade for way too long and it got heated up and brittle from the friction. I have some FD spiral blades and have discovered that the 3/0 and 2/0 blades (tiny!) tend to snap whenever my eyeball rests on them for more than 2 seconds, so when I do opt for a spiral, its usually a #1 or larger.