I have an Accuphase digital pre/DAC DC-300-which uses the same DAC as what's in the DP-75v, it sounds incredible. I am going to a friends house to check out his Audio Aero Capitole, which is suppose to be amazing as well, in fact if I could go back I think I would consider the audio aero unit running direct. I will make that opinion this evening, should be interesting. The electro unit is suppose to be super as well, as is the audiomecca, I don't hear anything good about the Wadia gear, and most that have it are always thinking about selling it. Of course some folks here use the wadia stuff and like it, but I question what they have had to compare it to, try to listen to as many as you can and pay attention to the DP-75v(far superior to the DP-65v, many feel the DP-55v is a better performer then the DP-65v) and the audio aero they would be the 2 I would most want to own on your list. Happy hunting
Tim
Tim