Just beat Ratchet's arcade mode. He is definitely a lot of fun to play as. Very versatile, with some potential for some great tactics using his gadgets.
I probably should have done some practice rounds with him, though, to refamiliarize myself with his moveset.
The game looks and plays beautifully on the Vita. I had my headphones plugged in while my wife watched Law & Order in the bed next to me. Sounded great as well. I love how the digital pad on the Vita feels with this game. I'll probably be sinking a lot of time into Ratchet, but tomorrow I may play as Cole.
I reached rank 11 by the end of Ratchet's arcade mode. I unlocked a costume and a bunch of other stuff I'll look at in a minute. I love, love, love this game. I'm glad I went with the option of digital, as I can't see myself not wanting this on my system for the foreseeable future. It's currently downloading on both of my PS3's. Both will probably be finished by the time I wake up tomorrow. Now, is bed time though, as hard as that is for me to do now that the game is finally in my hands.