CIB vs Cart just kind of depends on the game for me, if I have the option.
With this game, I'd love to see it with a full release, since Digress did such a nice looking job with the box design. Also, this game appears to be pretty loaded with different gameplay sections and such, so a manual would be nice as well.
I feel like we're pretty fortunate Al offers carts at such a fair price in the AA store, but not sure it's as lucrative for publishers to offer a $25 cartridge only option, which could be part of the reason for that.
I'll just be happy to play Tank Mission in some form. Looks unique and fun to me.