Not that great without the controller, with the included inbox Maxtor ATA133/SATA controller (usually $49.95 retail) it's a decent deal, especially for a single drive solution. I opted for this last time they had this on sale because it was only $30 rebate (instead of the Hitachi 160/180/200 deal with ~ $90 rebate - at least the 200Gb that I had in my hands for a while while mulling over the Maxtor deal). I hate having to call the fulfillment companies every time because they screw up, so it's less rebate money on the line.
The controller was Promise OEM (in case anyone was interested)