Maxtor has several different lines...
1. The DiamondMax 9 and Ultra lines (Maxtor's low end consumer 7200 rpm series) are one and the same. A lot of people here use them (probably because they are always on sale cheap and are quiet) but they have very poor reliability records (perhaps this is why they only have a 1 year warranty).
2. the Maxtor Maxline II or Maxline II plus (this is Maxtor's higher quality HD line with a 3 year warranty, and is available as either 5400 or 7200 rpm) seems to have a pretty good reliability record and is also quiet. The only problem is that most of the Maxline's on the shelves are SATA drives, whereas you need the IDE (aka ATA) version for the Replay TV.
3. The Diamondmax16 series, which is the 5400 rpm 2mb buffer consumer drive and has a 1 year warranty. I haven't read anything bad about these drives, but they are classified by Maxtor as a consumer level drive, not a "midline" drive like the Maxline.
The Maxtor quickview drives are DiamondMax16 drives (160gb and smaller) or Maxline drives (250gb and larger) with some additional bells and whistles (i.e. thermal protection, reduced error checking) so these should also be good. However, I doubt if they are worth the extra money since nobody here has reported any better performance from them than the regular drives.
The bottom line...you'll probably be fine with any of the maxtor drives except for the DiamondMax 9 or Ultra drives.
