Well don't know if you know this but you can go pick up a @Gamer magazine at Best Buy for $5 and use the coupon inside to get Rage FOR $5. There's also a coupon that knocks $10 off any used game $20 and up and I'm pretty sure Crysis 2 is around $20 among a bunch of other great deals. They expire on the 7th.
Crysis 2 has one of the best single player campaigns out there.
The online is, um, alright. It has some good ideas but it can be damned frustrating. The guns are super unbalanced and because of how fast everybody moves iron-sighting is useless. And every body spams the cloak so every single match turns into a game of "Spot the faint outline speeding past your FOV" and by the time you get a bead on an enemy some guy uncloaks behind you and shoots you dead with one burst. Fuck man, just writing about it gives me a headache. I mean if shooting at invisible dudes and missing every shot while they speed behind you and melee you to death sounds like fun, well then by all means get it.
I have Rage but I haven't played it much. What I've played seems good, especially for the price I got it for. Can't say anything about Saints Row: The Third although I did just order a used copy offline, and then sent a cancellation request because 4 days later it still hasn't been shipped.