Best low priced transport

I am looking at a good dependable low cost transport. I have read about Sony S7000, S7700 & S9000ES, Sonic Frontiers CDPs to use as a transport, Theta Basic Data II, etc.

What would make the best stock transport for around $500?

I will be using a Audio Logic or Museatex Bitstream DAC for a second system.

Thanks for your assistance.