Modo 10.0 has been stable for me so far, no crashes yet. There is a free trial version so take it for a test drive. The next release of the 10 series, Modo 10.1 will have some nice stuff(if you do modeling you’ll like it!), If you come from Max you’ll probably like it. This surprise was shown off in the Direct Connect subforum(for people who own a license(commercial or student)). They mention a rough timeline for the next couple of release.
Animation in Modo is still a a bit sluggish compare to the competition, in the area of deformation playback and even weight painting is slower then the competition. They are aware of this and will address this with a animation series in the future. Rigging in Modo is pretty solid though. Definitely setup your prefer hotkeys, I mostly use custom context menu to speed up my modeling, there’s also PIE menus if you prefer that.
Modo has gotten progressively more stable recently, because they have greatly improve their QA(they added more people, better QC checks/testing,etc). If you’re coming from Max, I’d definitely recommend Modo. Texturing painting is too basic in Modo, it doesn’t have the level of UX that something like Substance Painter has, for texturing I use Substance Painter/Designer. Modeling has always been Modo’s strong point.
@KillingWord(the UE4 plugin does not support 4.11 yet,but it should work with 4.10.4):
More videos here: http://community.thefoundry.co.uk/discussion/topic.aspx?f=3&t=121498