I've got 4350 MP for Christmas, what should I buy?

I did rather well over the Christmas holidays. After receiving a few topic unrelated gifts from my girlfriend, she delighted me by purchasing FTL, Hitman Absolution, Bully and lots of Microsoft points! I literally felt like an overexcited child at Christmas.

Now it seems I have somewhat of a mess on my hands. (I love Arrested Development) I'm pondering what to spend my points on as there are more games I'd like to purchase than points available.

I've narrowed it down to a shortlist and would like some input from you guys as to which I should go with. Here's the list:

Spelunky

Trials Evolution

Dust: An Elysian Tail

Fez

Mass Effect 3 DLC (From Ashes, Leviathan, Omega)

If you have any other recommendations then that would be great.