I've used just about every brand over the past 20+ years I've been playing and right now D'Adarrio's(9-42)They don't break easily.
I've played ernie ball and I've had them break after using them for 1/2 hour, I've used Fender bullets and had the bullet end pop off when using my tremelo, (on a Fender Mustang, there's not much tension there!) The most balanced set I've used is Gibson vintage. Every string had the same amount of bend, very comfortable to play, but I can't find them anywhere anymore. I've actually thought about creating my own set but I haven't had the time to buy individual strings and try it out.