Silent, Fully Modular PSU

Yes.

Look no further than the SeaSonic X-650 or X-750.

JonnyGuru review - the best power supply Jonny's ever tested.

The Corsair TX series are decent, but I prefer the Antec TruePower New 750W to the TX750 and the TruePower new 650W to the TX650. The TX950 is pretty much the best non-modular ~1kW PSU available, though.

The Corsair HX series is the modular series, they're some of the best around for the money. The TX series gets a little lower efficiency and has fixed cables, but is still extremely good for what you pay. Antec TruePower is ok, but not the best imo. The SeaSonic M12 PSUs are modular and in some cases better than the Corsair HXs, but you pay a premium.

Looks good to me. Do you think that having 2 HDDs, SATA DVD-RW, and 3 fans would be too heavy for the one Molex chain to handle? I'm starting to wonder if maybe I put too much on one line. I did it for cable management's sake, but I can redo some cabling if that's too much.

Corsair HX is fantastic.

I have the 520 and it's great.

Ya, it started making this nasty kind of buzzing, scratching sound. Not good. So, new PSU time.

WOah...didnt know the silverstones uses a San ace fan, judgin by that alone you know its a quality unit!.

I've got a silverstone sf700 unit and its been solid, its fully modular and its dead silent. I've throw 4x 4850s at it/ 3x 4890s and it hasn't skipped a beat.