I think your making a big mistake only considering amps with a built in DAC. as digital is currently the most volatile music source, as in changing the quickest. and there are some very good DAC's out there for not much money that will inevitably be way better then what most manufactures add in at your price level. I highly recommend you reconsider amp with out an internal DAC as DAC's are relatively small and could be concealed if necessary if that is a concern. Hell for a grand you can get one hell of a great DAC that will make most DAC's inside a 10k amp sound inferior.
+1
I agree with glennewdick despite having recommended the M6si (which I have).