I use this guy all the time. The response to an issue I had was never acknowledged, though my stack arrived shortly after. I was about to purchase another elite stack during a promo when the site decided to take the promo away from me. Needless to say I was pretty upset and disappointed. Though I see myself using them more in the future, just wish I could order the stack I wanted with the 20 percent promo that I had originally placed the order with. Without it, I will not be full filling that order as I can't afford it. I try to stack them with Bitcoin to get the most bang for my buck.