I choose Tumbleweed. Reason being that I do gaming and often you need the latest package of something to be able to. Although, I do not have any experience with Leap so maybe it is good as well? I do back up my own files, so there is not much danger in it for me. For a very stable distro experience at work, I use debian (stable). But it lags a few years behind, so is no good for games.

Leap is not good for gaming, especially if you want cutting edge versions of software and tools. For some software, there just isnt a leap repo.