• Splinter Cell; Conviction
• Alan Wake
• Red Dead Redemption
  

I would go for either Alan Wake or Red Dead. These games give much more than Splinter Cell. Alan Wake is a very story heavy game, while Red Dead is a sandbox giving you a lot to do, the setting is also quite uncommon, so it feels different from the usual city-based open world games. So if you look at the money to content ratio these are definitely above SC. 

Well, RDR is leaps and bounds better than The Saboteur. I'll tell ya that much right now.

Well, it depends, if you have a buddy to play with SC Conviction might just be the one for you. Do you like co-op games?
Do you like shooting people in the head? Pick SC.
Do you like cool-lookin' western style games, heavier on story? Pick RDR.
Do you like eerie small-town investigations and sleepless nights? Pick Alan Wake
 
Really, just go watch the quick looks for RDR and Alan Wake, that should give you more than enough
information to make your own decision about this stuff. I hope you pick one you enjoy!

Alan Wake is kinda short and has a low replay value. But a good game. I've not played the others yet :<

I would go with red dead. I am playing it now and it so addicting. The best part about it is you get lost in the world. You are on your waying to go start a mission and then a random occurance happens, like someone is being robbed and you decide to help them, or you see a wanted poster and go hunt the bounty, or you start hunting some rare animals for some extra cash. So if you going for something that is high quality, will give you the most play time, and is just a great time, then i would go with red dead. 

" @PhatSeeJay: Hey, just tryin' to help. Didn't see the part where you had seen the QL's.  But whatever, I'm  just tryin to help you decide. Just sharing with you what I know. "

" I would go with red dead. I am playing it now and it so addicting. The best part about it is you get lost in the world. You are on your waying to go start a mission and then a random occurance happens, like someone is being robbed and you decide to help them, or you see a wanted poster and go hunt the bounty, or you start hunting some rare animals for some extra cash. So if you going for something that is high quality, will give you the most play time, and is just a great time, then i would go with red dead.  "