personally i found it pretty jarring at first (couple weekends ago). trying to quest was giving me a coronary because it seemed like some of the systems or UI prods were missing. Things got easier as I spent more time with it but there was a big hurdle at first for me. I'm not sure if I'll stick with it. Lots of the systems are great but there is a feeling that some polish or something is missing from it's core. I can't put my finger on it yet.