I can't really comment about the speed, because just before I installed XP over Me, I upgraded her machine to a half-gig.
So, even though her machine is a 350Mhz K6-II, it's pretty zippy now.
My only complaint is that there are no drivers I can find for the Philips Rhythmic Edge PSC702 soundcard. The "beta" versions won't install, so I guess I'll have to buy her a new card.
Otherwise, "ish kabibble."
You must understand that Microsoft only releases BETA software for the public to test. (They have a lot of nerve charging $$ for it). ME never made it to the "Second Edition" (thank goodness!)
I believe you will eventually realize this about XP as well.
Release a sub-standard version, then offer XP as an upgrade... they tricked me, but I haven't been having any major unfixable problems with ME.
I did have to reinstall it once, but that was all, and I didn't lose any data.