I've owned both the PV-5 and PV-10. The PV-5 is the better sounding of these two. The 11 and 12 I've heard, but never in my system.
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Owned all with exception of the 11. The 10,10A and 10B models are good sounding, but the 12 is a bit better overall IMO. While the 5 is a classic and was great pre amp in it's day..... it is dated by comparison to the 12. The 12's noise floor is quieter and has better dynamics. I would look for a 12A which is an upgraded version of the 12 and incorporates some key changes for the better. It has become hard to find now however. I also owned CJ's SS PF-2 and PF-R models, and while the excellent PF-R is also good sounding, it is more forward and IMO a bit less musical than the tubed 12.
Are you looking for line stages or units with phono?
In general I would agree with the comments above that, of the CJ units you listed, the PV-12A/AL is the one to get.
If you are looking at phono and do not have to stick to tubes, the Motif line (MC8/MC10) had about the best phonostages available in any pre; at least for their time. The newer (but still discontinued) PF2 was essentially the same design but of different construction.