hello. please help me decide on a psu before i lose my mind

[charlotte]

i put together a new computer this weekend, but im seriously overwhelmed by the amount of psu's there are to choose from. i thought my old psu would work in my new computer, but it doesnt.

computer:
q6600 quad / 2.4ghz, i plan to overclock at some point
4gb ram
gtx 280
5 harddrives (i know this is kind of stupid, but i just feel "safer" having seperate drives for different media)

i havent included like the full specifications of my computer, just the stuff i thought was important, if you need me to list everything i will

the psu must be single rail (i have read the "single vs multiple rail" post, etc, and i still want to use "single" rail) AND modular.
i live in the uk and would prefer not to pay extortionate customs charges, so it needs to be available in the uk too.
also i would like a psu that has "headroom", i MAY install a second gtx 280 eventually, but not for some time.

thankyou in advance for any advice you can provide me with.

ps: i have searched the forums and other websites but the more psu's i read about, the more nervous i feel about choosing The Right One.

[Oklahoma Wolf]

There are only a handful of units I can think of that meet all those requirements:

Corsair HX620
Silverstone ZM1200M (set the OCP switch to single 12V)
Silverstone DA750 and up

I'm not sure I would run two 280's on that particular Corsair unit. The TX750 would be better for that, but it's not modular.

[dangman4ever]

Look up the Silverstone DA1000 and DA1200 PSUs. Those are the only single rail modular PSUs in the 1000W range that I know of.

[Valset]

If you can give up the modular requirement this becomes easier.

[spursindonesia]

Yup, unless you're playing the same game as the like of FUGGER, Macci, Sampsa, etc, there's no absolute need for a single 12v rail PSU for daily usage of average user -even when he's quite a power user himself.

Speaking out of experience, i use a Silverstone Olympia 750w now, yet i still miss my good old Thermaltake Toughpower 700w Modular, not because of its modularity, but simply because of its smoothness, no hiccup whatsoever during its duty as my powerhorse backthen -with this Olympia, i experience house MCB's dropping once in a while when the PSU is turned on through my AVR servo motor from cold, no power condition.