My Harman Kardon receiver has an issue, and not too sure what the cost will be to repair it. I have been in love with the SC37 for quite some time. The Ice amp brain wash here in the forums doesn't help getting to the point. interested in the sc37, 55, or 57. hoping some owners of these could chime in. is the extra dough worth it for the 55 or 57? how does the ice amps compare to the new D3 amps? reading lots of reviews, seems people like the ice technology better. thanks and looking forward to the input to help my decision.