I haven't noticed anything new on the '12s vs. the '11s to justify buying new, just keep in mind the 38XX series was replaced by the 43XX series, not sure if it means a whole lot but I suspect the circuitry is set up better in the 43XX and higher versions, again I am not sure if there is enough difference in quality of the components and layouts ie. P/S, caps etc. to justify the added cost Denon charges for the 43XX series.
John's suggested refurb at ecost looks to be a pretty good deal. I have used ecost before and the transaction went very smoothly.
