Bethesda endings seem to be my thing. They complete the game, ending it with room to build onto it, but only as an extra bit rather than being unnecessary, and seem to always have your choices become reflected into the endings. FO3 and NV both had that, but personally I liked Dishonored. Yes, it was a "good/bad" ending, but in reality, it felt like it didn't really shove it down your throat, but instead reflected how you actually were and how others would see it. How you acted actually effected (affected, don't know right word, sue me for being ungrammatical) the way the ending was interpreted. Did it right for me.
Shame Deus Ex HR couldn't do that right...had potential to do the same thing