ME is fine (for a red headed step child) it's just that when it was first released drivers compatibility was the biggist issue.
I have ME running on my old Pent 166 that I use for my Classic 50's Radio Broadcast
http://www.wizbonespc.com:8020/listen.pls
It's been up and running 24/7 for about 6 mo. No problems. Course that's all I use it for but the most common problems that my clients have had has been driver related.
One other thing I notice on the HP boxes shipping with ME if the Dialup Adapter gets hosed you have to reinstall the OS to recover from it. There is no easy fix that I have been able to find. I could be wrong but haven't found it yet. :