I have only every had 2 come off and go MIA. I never had one split though but im a bit of a comdom snob and will only get durex. The ones they give you at the family planning are horrible .
You need to get the ones that are lubricated on the girls side as they can make you a bit dry. You can also have some fun with them. Id recomend the pleasure max and the featherlight ones.
Family planning give us Durex... Even had featherlites once lol
Mates do a latex free type, think they're called Skyns. Sooooooooo much better than latex ones. They're a whole different experience, almost like they're not there.