help marantz pm6004 onkyo a9050 yamaha s700/500

plan to build a budget system for classical music. my cd player is yamaha cdx-550, and marantz 6270q, as well as my computer, speakers are boston acoustics a26, and mission 732.

i wonder which of following would be my best choice,
marantz pm6004 onkyo a9050 yamaha a-s700/500?

please also advise if there is any other choice.

thank you very much.