I've never used OCZ so I can't say. If you've had positive experiences with OCZ Ram add it to the list here. Maybe on my next box I can pick some up if ya recommend it.
I hear the 1GB kit (512x2) of TwinMos ram is very good. I've seen nubius recommend in numerous threads. It is only $99.95 and has very good reviews on newegg with people constantly overlcocking it from 240-270 fsb. I sure plan on getting it .