Spencer,
Best of luck in your filmmaking edeavors. There a a number of level headed folks on this board, as you may know, whose advice is quite good...I'm looking at you Lethal.
It sounds like you may go for the GL2, which is another fine Canon product. You'll be happy with it if that's the way you go, but let me propose a something before you decide on a camera. Heck, your folks may be impressed with you research and kick in a little extra money. If you're able, and get your Mac before the camera, check out the boards at DVinfo.net. It's not too difficult to find or reqeust raw SD and HD footage. I bet if you tell people why, they'd gladly send a bit of footage your way. All you need is about 30 seconds, really. I'll be more than happy to send you XL2 footage, if you'd like. Get footage from a number of cameras you're considering, including HD cameras that are in your budget. Do whatever you'd like to it in FCE or even iMovie, burn it to a DVD and see which images you like the best.
Good luck!