Chord QBD76 vs Ps Audio Perfectwave DAC?

Hello, recently a friend bring to me the opportunity to heard a Chord QBD76 in my system, and I'm very impressed with his sound, specially when his memory buffer is engaged to the maximum. I have read very good opinions about the Ps Audio Perfectwave DAC (specially when connected using with I2S to the PWT). There is someone that has opportunity to compared this two dacs?
Curiously I have found that the PWT and the Chord seems to use the same field programmable gate array: Xilinx Spartan. Is as some of the capabilities of the Chord (memory buffer and FPGA)were did implemented in the PVT.