The case for IG: There's no case, really. I wanna get some games. Max Payne is supposed to be awesome, though short; maybe Deus Ex, which I've already played through but loved, is a better buy. Oh, and I'm forgetting about Tennis2K2 for the Dreamcast - although, if that comes out for Xbox, I might just wait on it.
The case for SP: Jesus, I'm so broke I can't even afford to get a new pair of shoes. Well, wait a second - the money I could spend on games could easily cover shoes - but I don't want shoes, I want games, dammit. Plus rent and bills are coming up awfully fast, again, and it might be a fun experiment to see if I can pay all of them on time this month.
The verdict: Oh, shit, I'm going out tonight, I gotta pay for drinks!