Galaxy / KFA2 - I've checked all price grabbers, googled, and they appear to be unavailable over here.
Sparkle Calibre - they appear to have exactly the same cooler as Galaxy / KFA2, so I'll count it as a vote for this card unfortunately I heard about some QA/builkd quality problems such that these cards can be unstable even with factory overclock; I'd have to confirm it, as perhaps the users had poor airflow or weak PSU
Too bad the Galaxy isnt available to you, its to me the perfect gtx580, their bios was done with noise in mind, the card stays in 30% speed no matter what, i wrote to Galaxy if it was PWM, and they said the fans wont ramp up until 73C, playing 4 hours SC2 the most i seen is 65C, i bet there are more demanding games that will push pass the threshold, but in my case its been great experience, again i mostly play SC2.
Now on the Sparkle, in theory it should be the same, as the cooler is, but i read comments about their bios starting at 40% (i think this is the default Nvidia setting for the GTX580), in here and other forums people have flashed their gpu to change fan settings, not sure if it will work though, but i avoided Sparkle for this reason alone, read much better reviews about the Galaxy in terms of noise, and i wanted the BP
. There is someone here in SPCR that also got the galaxy and flashed to 15% speed (i think), check this two links, KFA2 (Galaxy) GTX580 Anarchy editon - quick review
and Recommendations for quietest GTX 570 (or even 560 or 470)
Personally i would avoid water cooling, unless you are going for heavy OCing, Air coolers of today seem the prefer choice for quiet pcs.
Good luck with your choice,