Well, the Thermaltake I bought as a temp stand-in for my RMAing Tagan is doing a fine job. Nice and quiet, and even though it is rated at 18A on the 12volt rail, it hasn't failed me yet. I would recommend it, and if you already own one - then try it out before dishing out extra cash on something new.
Look at my sig and you'll see chunky kit in this box. Specifically those two 10,000rpm SCSI drives and it's SCSI card. In total there are two fast hard drives, a CD-Writer, DVD player, cooldrive with it's fan and LCD screen, four case fans, one CPU fan, one graphics fan, one SCSI fan, and the Northbridge fan. That is on top of normal things like graphics card needing it's own molex connector....
Oh... and the neon light and leds on the fans....
In fact, I now have a brand new Tagan PSU sitting here and I am wondering if I can be arsed to swap out the Thermaltake for it. Especially as this one has pesky sheilded PCI Express connectors instead of a sheiled standard molex I need for my GeForceFX 5900XT.
[Edit...] LOL
funny how my advice has changed over this single page. One minute I am saying "20A" then I go on about my "18A" Thermaltake. Key thing here is that it is working fine. Though I don't know what the difference will be once I start pushing harder into the overclocking.