If you get the deluxe version of The Fame Monster, you'll have everything other than the crappy lead single to her next album (Born This Way). Or you can take out the five actually bad or pointless songs and be left with something pretty consistent. Those songs would be Eh Eh (nothing else I can say), Boys Boys Boys, Paper Gangsta, Brown Eyes, and Starstruck. Then you'll have 17 fairly solid songs. But if you're buying these on iTunes anyway it would probably cost less to just get the whole thing. [Added: You can download the whole thing on Amazon for $13 -- a much better deal than buying the tracks individually.] If you wanna narrow it down a little more I might get rid of Alejandro and Telephone. The rest of them are all worth having.