The second is interesting, but basically a much weaker experimental version of adventure. The original is one of those timeless classics, however. The hard mode will actually challemge you.
Also, I've heard that if you are qualified but simply didn't opt-in to the emails, you can call Nintendo and they'll send you the codes anyway. 1-800-255-3700
Jeeze. I bought the xl for 180 last month, swapped it for the MK bundle this week, and now there's this deal. Ah well. Excellent deal for anyone thinking about a 3DS. For what it's worth, I think the MK bundle from this week is a slightly better deal since you'll never have to lug around an MK...