Best transport for USD500

I am looking for a player to serve primarily as a transport (using the coax digital out) hooked to an external DAC (perhaps to a Bel Canto DAC 1.1/MSB Link DAC III). Within my budget, I have shortlisted the following from what is available to me:
- Arcam CD72T
- Marantz CD 6000 OSE LE
- Shanling CDS100 (aka Music Hall CD25)
- NAD C541i
- Cambridge Audio D500SE
Does any one have experience with any of these players+the BC/MSB? Would appreciate inputs based on experience. Any other suggestions are also very welcome.
Thanks and cheers