I'm not too sure, I haven't skied a ton of places. The MRG single definitely looks like it would be a favoriteif I could get up there sometime.
At a place I've skied I'd have to go with the barker quad at Sunday River. Just so much shit to go explore off it, at the end of the day I just like to go off and traverse all these old narrow logging chutes that are everywhere (Think goat path but steeper).