Got it today and played through the spaceship scenario and a bit on the planet surface. It'd be nice to have the C-stick be look but so far no big deal. Had a little trouble with the strafing and shooting the parasite queen, but probably just needed to get used to the controls some more.
What's up with the graphics though, they are seriously insane. Between this, Starfox, and Rogue Leader, the Cube has got some of the most mindblowing visuals this generation. The only thing is no widescreen option.
I only played a little on Tallon before turning it off, it seemed pretty huge though. I liked the little touches, like the condensation on the visor and stuff when you surface from the water and stuff. Unfortunately, I will probably end up shelving this game until Christmas break since I've got too much other stuff to play, including Fusion.
