I know Ultra power supplies have had some problems in the past and devolped a bad reputation among some users but it seems like the ultra second generation psu's have been getting good reviews they have a 3 year warranty upgradeable to lifetime warranty by registering on the website.I really like the way the flex cabling is on these psu's ,dual rails, no active pfc though im thinking bout getting a 600 watter for my next build anybody using the 500 watt or 600 watt second generation how has it been so far?Talking bout the x2 or the new x- finity