You might wanna check out the officemax website and see if they're offering the same deals online so you can avoid having to go to the B&M store and the shopping hassles.
Yeah, the hard drives do get hot so look for an enclosure w/ a fan on it. I didn't get an enclosure w/ a fan so I ran one of the power supply leads through one of the holes in my case and put a 120mm fan right on top and it works just as well but that's only one suggestion if you wanna do it ghetto-style. As long as you have a cooling system of some sort, it should be able to last. I keep my enclosure running for, sometimes, 2 days straight and it still runs smooth.
As for the Western Digitals, I believe they're ATA133, 8MB buffer, and 7200rpm.
Maxtor isn't bad, but they're relatively the same (WD and Maxtor) but the old Western Digitals sucked. I think they were called Caviars but it was more like rotten fish. But WD has made their newer stuff more stable. If any difference, it would be sound and heat distribution. WD tend to get hot quick and they 'whirr' louder. But they're both relative similar in terms of performance.
After Black Friday, I should be close to 2TB (terabyte)