Pros/Cons of moving from CJ PV 10 to SS?

I currently have a CJ PV10 for my preamp. I’m considering replacing it with a solid state preamp around $2000. What are the pros and cons of such a move?

Reasons for the move:
The CJ doesn’t have much in the way of resolution.
I will get a high pitched whine after its been on for several hours. Its done this with all the tubes I’ve tried.

Current set up:

Rotel cd player with PS Audio Dac, w/level three Cullen mods.
Amp: Wyred ST 500 (Replaced aging PS Audio 240 watt mono blocks. The Wyred sounds better).
Speakers: Energy 22.3. This was one step down from the Veritas series. It’s a bit forward sounding. I expect to replace it with either Dynaudio Focus 22.3’s or Vandersteen 3A Signatures.

Music: Almost anything acoustic, 60’s rock.