Stanwall - you mentioned your DAC playing at 96kHz better than 192kHz. It is because every DAC chip has lower THD at 100kHz than 192kHz update rate. For that very reason Benchmark decided to update only at 110kHz output DAC chip that is capable of 24bit/192kHz.
As for multibit or one bit dilema they have specific sound. Most of converters now are one bit (delta-sigma) and even SACD is a byproduct of delta-sigma just before filtering. Most of people don't complain about sound of SACD or DSD recording maybe because it is not in priciple but in realization. It is very difficult to keep exact timing with high oversampling rates and delta sigma end-up not much better than multibit converter. Multibit is limited by tolerance of component to about 18 bit but there are improvements on the scheme. DCS makes RING-DAC where they shuffle components inside (ring of 5 if remember correctly) to get an average value. ARCAM bought license from them and used RING-DACs in earlier FMJs (FMJ-23 I believe). They had poor production yield and stopped but I believe DCS still makes them.
As for multibit or one bit dilema they have specific sound. Most of converters now are one bit (delta-sigma) and even SACD is a byproduct of delta-sigma just before filtering. Most of people don't complain about sound of SACD or DSD recording maybe because it is not in priciple but in realization. It is very difficult to keep exact timing with high oversampling rates and delta sigma end-up not much better than multibit converter. Multibit is limited by tolerance of component to about 18 bit but there are improvements on the scheme. DCS makes RING-DAC where they shuffle components inside (ring of 5 if remember correctly) to get an average value. ARCAM bought license from them and used RING-DACs in earlier FMJs (FMJ-23 I believe). They had poor production yield and stopped but I believe DCS still makes them.