So I'm going to order an iMac as soon as I get some advice. Easy really, I'm debating on the 2 20" models and I'm wondering if there's really that great of a performance difference. I'm not going to be doing anything extensive with it but if I'll notice the difference with even simple tasks like browsing and movies etc... I'd take the higher road. The price difference isn't really a concern but if it's worth saving a few hundred for some accessories or something, I'd appreciate it. Thank you.