I know the capacity ain't up to much, but Maxtor has a new drive out that's 15Gb and specifically designed to have a lot fewer parts, therefore less to go wrong. It's small, only uses a single read/write head and a single platter, therefore reducing the possibility of problems. It also has some technology to "park" the head suspended above the disk instead of on a park-zone... nice idea.
Here's a link to the article I read;
http://www.pcworld.com/news/article/0,aid,41062,00.asp