Antec 430Watt. Believe it is a 24 pin connector. I wouldn't say it is that important.
I mean if you have an Antec 430 Watt with a P3 1.0 Ghz, 256 RAM, Geforce 4 Ti vs. P4 3.4 2 gig RAM, Geforce 7800GTX, well I don't think the quality or size of the power supply matters in performance. If I was to use 5 different power supplies, system performance is the same. It is important however to get a good one though, but Processor, RAM, and Graphic's card are the most important if you ask me.
@ Horsepower: I wish Antec Cases were lighter, but they have good power supplies and lots of room.