The new Quantum Atlas Series has a 1080 that has a meg of cache and runs at 7200 rpm, give you an 8ms time. Don't know if you would be able to take advantage of that speed and the drive is a bit more expensive at $269 list from Pro Direct. The Quantum Tempest Series is also new using a similar technology. It is their econo model. The 1280 runs 4500 rpm with a smaller 128k cache and gives an advertised 10.5ms time. It only runs $245 though. I would go for the extra capacity unless you are going to buy a FWB SCSI card or something since you Macs built in SCSI may not let you realize the benefit of the faster drive.
All of my Quantums are fairly quiet. My 2.1 Empire is the noisiest, but not annoyingly so, and it runs faster than my Trailblazer 850.
I would find the best advertised price in Mac Week and make whoever you buy it from match the price. You guys have to learn to ask for the better price and not rely on what is listed. Sometimes they say they can't match it and I buy elsewhere but most times they do. I always ask what their best price is up front before I neqotiate. Many times their best price is cheaper than any advertised price. List price is for chumps.
