To give a bit of background: I'm currently without a computer that does what I need it to do (mostly work with audio - pretty critical for a computer music composer). My current desktop is functional, but only in terms of basic things like internet and word processing. I've been in the market for a MBP, but have been trying to hold out for the refresh. Barring that, I was going to buy a refurb 15" 2.6GHz/200GB@7200 system and throw in 4GB of RAM. Along with this, I need to purchase Office 2008 Home and Student (long story, but just trust me when I say "need"). In what I do, processing power and hard drive speed are pretty damned important, so the maxed out system actually had a functional purpose. All said, I had budgeted about $2985 (Canadian dollars) to cover these items, taxes in. I had previously considered a 17", but mostly ruled it out for cost concerns. BUT - I've now found a used 17" 2.4GHz (Santa Rosa/Merom), 4GB of RAM, 160GB @ 5400 hard drive, 8600 GPU with 256M of video memory with apparently good running temperatures, Office 2008 installed, along with Tiger, Leopard and XP discs, for about $1000 less. Warranty expires next month, but it still qualifies for Applecare (which I currently have, and am just waiting for a system to apply it to). I'd have to purchase a 7200rpm hard drive - either 200, 250 or 320GB - and have it installed, which will probably set me back about $300 or so. So, the basic difference is about $700 between the systems. My biggest concern, aside from the fact that I don't really know its history and usage patterns, is that this system's GPU falls squarely in the batch of problematic cards, and I'd be losing a full year of coverage for it. The seller claims that he's never had any graphics glitches, but it's hard to feel too confident in that particular run of GPUs. As well, I'm concerned that the smaller video memory might make it difficult to smoothly run graphics intensive programs on external monitors (either my current 27" or potentially 2 27"s via a Matrox DualHead2Go) So, what would you do, bearing in mind that if I don't get this I'm potentially looking at several more weeks of lack of a functioning system?