Needs advice for Power/Int Amp up to ~2700$ (New/Used) - MF/McIntosh

Decided on a bigger budget: 3000$-5000$

My Speakers: 2.5 way Floor standing Scan-Speaks self made (20Hz-20KHz).

I use only digital sources (Toslink/HDMI). I need a a new pre as well and thought of the essence HDAC II.

Amps:

1. Musical fidelity M6 PRX

2. Musical Fidelity M6i (and will be used as a pre + Ex DAC)

3.. A Used McIntosh (I had McIntosh’s in my car and they sounded great) - but I can’t find something in the budget (MA5300?).

4. Odyssey Audio Khartago or Startos Stereo/Mono

5. The new Yamaha AS-1200 - looks great, sound?

6. Marantz model 30?

7. Benchmark ABH2