DJ hero 2 or fallout new vegas?

im can choose from dj hero 2 or fallout new vegas for christmas . both are great games but heres the thing. i have many online games like black ops that sometime just get boring. im a huge fan of fallout 3 and i enjoyed guitar hero and i hear dj hero is wayyyy cool..i just want a break from all the boring basic gameplay. my b day is soon so i could get one then but for now im leaning towards dj hero 2.........any thoughts/suggestions??? please help thanks