For your budget I’d suggest a Tascam 200 as a CD transport with a Schiit Audio Gungnir Multibit DAC. Alternatively, you could go with a Cambridge CXC transport or Audiolab 6000 CDT transport. I like the Tascam as it uses a Teac 5020 cd transport, a very good drive.
The Oppos don’t have dedicated 44.1 kHz clocks, and Redbook CD suffers as a result, in my opinion. Most modern DACs don’t decode HDCD, but I have read that they still sound very good when the 16 bit layer is when decoded with a high-end DAC like the Gungnir. Schiit Audio offers a 15 day trial.
That combo should give very high end Redbook playback. For SACD or others, you could retain the Oppo. Otherwise, you could look for a CD player in the same price range, but I’m not sure anyone in that range would beat the combo I've suggested.