Saints Row lives up to the reputation that GTA built. Instead of bowling and throwing darts like in GTA, in SR you're pimping ho's and throwing yourself in front of cars for insurance fraud. Sure, in GTA you can walk around drunk, that's fun the first time, but the second and third time it's just annoying. But in SR, when you throw yourself in front of cars to scam insurance companies, that's fun, time after time after time.
Saints Row isn't as pretty as this year's GTA, but SR was published in 2006, so let's get over that hurdle. If you allow yourself to imagine how SR would play with GTA's sophistication, then you're talking Game of the Year status. All I'm saying is, if you haven't played SR yet, and GTA IV left you feeling let down, then definitely trade for SR and spin it around the block a few times; you'll see what GTA could have and should have been. Saints Row is a fun game to play while GTA can feel like work playing it.
I have very high hopes for SR2, even though it probably won't warrant a purchase during the Holiday rush, it's definitely on my watch list for games to trade for.