I am using a Burson 160D and a M2 Hiface to convert USB-SPDIF 24/192. I am considering upgrading the M2. Is there anything out there that will perform appreciably better than the M2? I have seen Halide, Audiophellio, J2Keny, etc. The Off Ramp appears to be out of my price range (I think it is like $1300) Thanks.