Wierd ass cooler on that XFX. Good way to heat up the whole PC case!
Voltage control is only useful if you plan to push the card to extreme overclocks. You can still get pretty high on stock volts. However, given that that BioStar one is reference and under $300, I'd get it. In fact, I almost did buy that one but then a local retailer had the Sapphire Dirt 2 edition in stock (the only Sapphire reference model) for $298 so I got it.