Used separates in sub $2k range?

Thinking of Mesa Baron/Quicksilver LS, but opinions (Masa Baron) on A-gon archives, ranges from great to hardly HI-end at all. I like Sonic Frontiers sound, so would like to upgrade from SFC-1 to separates (if that means upgrade) with the limited budget.
Blue Circle BC21 Tube Preamp and BC22 SS Amplifier.

Conrad Johnson PV-10 Tube Preamp and MF2250 SS Amplifier.
Why not Quicksilver LS and Quicksilver Monos?
I would go with McIntosh MC7100 and C712 (designed together - I have them now), or, the Conrad-Johnson setup mentioned by Sugarbrie. Good luck.