No one can answer that question for you. It depends upon your taste, your room, and your other equipment. I think they are both good pieces of equipment, each having its own sound. I personally prefer the Quicksilver (which I think has a warmer, more tube like sound). I don't think you would really go wrong with either of them. And there are other choices out there for about the same money. But if I was limited to those 2, and it was my money, I would choose the Quicksilver.
