well, this really depends on taste. if you like more action/arcade based games, then space miner is you obvious choice. warpgate has a much more varying play area and it also has much more slow paced playing. i personally loved both.
Can't speak for the first Cartoon Wars, but there's a lot of better apps to spend a dollar on than Gunner. It's sorta fun, but feels unavoidably like a Flash game. And it starts out really, really, really, slowly.
ok one dollar left freaking inkies or flight control... which on has more content theat willkeep me coming back for more
Definetly go for it. I'm not into RTS games, other than occasionally playing the -craft games. But I loved this game (I tested it), even though I never won a match, since I'm so bad. Just get it now, you'll really like it.
Justing Saying, I just got Solomon's Keep and Armada, and they are both awesome. Look them up if you are looking for a new game.