When I first started I broke alot of blades one reason was I pushed to hard thinking it was like any other powered saw, once I learned to let up on my pressure the blades stopped breaking so much, I also found when you push too hard you bow the blade which will weaken it as well as adds alot of heat to the blade which once you get these baldes hot they will snap like tootpicks pretty fast. Once I got this down I hardly ever break a blade, if I think the blade is dull or not cutting like I want I toss it, they are cheap, I also watch the bottom of my work peice if I am getting alot of fuzzies or tear out change blades.
I love flying dutchman blades, in fact I have two types I use the scroll reverse for stuff thinner than 1/2 inch, if thick wood I like using the ultra reverse has teeth facing both directions helps cut better.