I guess that's more like Korean way though. Tweaking stuff by yourself is the Eastern European way (did you know a huge part of team XBMC are Polish?).
You can get high resolution through Samsung's setup, although it's exactly for the same thing - just to play with. Be it Youtube, Netflix or any other big streaming service, but you can also play videos captured by the phone or any TV channel through your STB, in which case it works like a smart multi-remote.
I don't really watch movies at home and I often spend more during a movie night in a cinema, so no big deal here, even though I have a room with good TV and audio setups hooked up to my PC, so I can get better quality if I invite someone over for a movie after all.
Samsung's software does provide some cool features though. If anything, I can shut down my whole system with my phone if I decide to sleep on the couch, or turn everything on and watch something. That's all. It has IR and works like a multi-remote too. You don't get any of that stuff in stock Android and that's the type of features I quite like in the Samsung ROM.
My home setup is mostly for PC (and sometimes Xbox) though. That provides much better experience to me than a separate lower end XBMC box. I would have one if my PC was standing far from my TV setup and if I was a TV series fan to auto-download and sort huge amounts of video files, which is the only thing XBMC would be good for to me. But I don't collect media other than music and really great movies, I have no need for automatic downloads too. A good PC (doesn't have to run XBMC) hooked up to a good audio and video setup is the best way to go as far as convenience and quality go, yeah. That's obvious. But sometimes it has to do with CPU execution times too, and definitely the type of hardware you're running