Most important is to go high bitrate, I would suggest 320 kbs Variable if ur player supports it. Keep the depth standard which is 16 bit for a CD. Dither is tricky and you can read more about it on wikipedia, IMo it adds sub-hearing level background noise to the record, making lower - level signal restored by DAC in smoother more "analog" shape, thus decreasing low -level distortion; I would keep that setting default. Use replay gain if u want the same average dB level (volume) for all your songs in one compilation.
Hope I helped