The new spiderman ve - Could be a good choice as I do not think a lot will be sold here so could be collectable later, is also a very proven game with great code.
Metalica prem - Fans seem to love it but I think you need to really like the band? Great code also
Kiss prem with the hope of the coding being finished one day - As above without the code? Unproven?
Walking dead prem - The ducks guts right now! People are loving the code. Theme is awesome but as Pete said tough game to play. Lots of centre drains.
Game of thrones prem or le?? - To early to tell, seems like it will have a very deep and varied ruleset.

Tron - Best game EVER!!!! Ok I may be biased, good code, not an overly deep game. Make sure you like the theme and may be hard to find.
Iron Man - Fast, hard game. Very simple rule wise (not necessarily a bad thing) VE still may be around to buy?
X-Men - Lots of shots and very deep ruleset, could be hard to find. Storms voice drives me crazy on this personally!
Avengers - Super tight shots, does not seem to get much love. Bargain on AA for a Hulk ATM?
Star Trek - Lots of fast flowing shots if you like that, again have to like the theme I would say. Also may be hard to find if you are looking now.
Lord of the Rings - Super deep game with lots of interesting shots, complete code. Hard to find.

Also could wait to see Ghostbusters? Looks like art will be amazing and announcement is imminent! I would wait to at least see it before buying anything, unless you know you don't like the theme. Code will obviously be an unknown.

Or you could just buy a MB?