I just ordered a ZT Systems i7 2600 desktop from Costco (4/26/12) and there is a lot of discussion about the inadequacy of the 350w power supply. I want to add a second dvd drive, video card, and second HD drive. Does anyone have experience with ZT desktops and can you you recommend make, model and wattage for a power supply? I will be using dual monitors, Photoshop, and using BlueRay Disk drives and media. Any information would be appreciated.