I've been using ST3 for like 5 years (in beta) and it was just as stable as the "stable" release.
There was absolutely no reason to use ST3 for the past 3 years if you already used ST/ST2.
That was already the case for ST2, which was stable for years before it officially announced it was "stable".
Stable/unstable for STx are just labels, they don't actually reflect the state of stability. Plus all the real work (new plugins, etc) happened on the "beta" ST3 side for years...
