Stable release.
Beta releases can be expected on a regular basis. Stable releases less frequently. Beta releases may introduce new bugs or breaking changes so be sure you're aware of this if you do decided to use our latest betas.
Yeah I´m aware, I´ll stick to the stable releases if I do bigger stuff and probably use beta releases for tinkering. That stable releases will be "less frequently" is what I expected, I hoped for an estimate like "every 4-6 weeks" so I can sort of expect when juicy new features will drop into the stable version.