Jasper, I think I have an Enermax in mine (I only upgraded it at the end of last year, you'd think I'd remember!)
They are
here I went for a 450 or 500, can't remember, but the biggest thing for me was the number of molex connectors to power all the devices I have in there. I upgraded the video card at the same time and it needed two of the bloody things! And it generates a fair bit of heat so add some extra cooling, the video card and PSU combined I mean.
[Edited on 22-4-2005 by TP]