If you like Ernie Balls, look into their new Paradigms. Expensive at about $15 a set. But the construction at the ball ends is over the top. They're suppose to be the most durable strings on the market. Ernie Ball Strings has a series of demo ads for their Paradigms that are amusing. My favorite is with Paul Gilbert:
I've had this happen twice recently... breakage at the post. But this was due to setting up a couple guitars. A lot of tuning to pitch and then releasing tension for nut work and intonation adjustments. Otherwise, it has been many years since I broke a string by bending. And when it did break, it was usually at the bridge saddles.