Funny thing I've found arch the rolling distro with the least breakages. I've tried (and liked) tumbleweed, sidux and others, but ended up with arch because it was just very stable.
This probably is true as long as you don't compare to Manjaro which does additional testing and fitting. I once (this was long ago, but after I have had used Arch already) tried the latest unstable Debian and found it so broken I just couldn't use it at all, let alone rely on it.
This isn't really true last I checked. They merely make their testing repo, what's effectively in line with normal arch release, available for 2 weeks then rely on someone telling them something is wrong in their forum. They don't do much, if any, testing themselves.