sound of new CJ vs AR tube preamps?

Is sound of Conrad Johnson preamps like 17LS more neutral or warm sounding compared to Audio Research preamps like LS/SP 14,15, 16?
"warm sounding"? If you can't stand a degree of accuracy and think it is too solid state, leave ARC aside.
I can't comment on the Audio Research stuff but the 17LS
does have a warmer sound. Its a bit rolled off on the top
and bottom but does have nice midrange. I would say the
17LS strives to more musical than accurate.

thanks. this corresponds to my impressions of Conrad Johnson solid state preamp.