I love my Wright Sound WLA12A, which is in that range used. Great detail and bass with just a touch of warmth. I also use SS power, and it transformed my system.
I also tried a modded Dynaco PAS, which added way TOO much sugar. I've heard the PV10 in a friend's system, and while not as warm as the Dynaco, still not my taste. All the lower end 12AX7 preamps I've heard share this characteristic, which is why I ended up with the 6SN7 Wright.
I also tried a modded Dynaco PAS, which added way TOO much sugar. I've heard the PV10 in a friend's system, and while not as warm as the Dynaco, still not my taste. All the lower end 12AX7 preamps I've heard share this characteristic, which is why I ended up with the 6SN7 Wright.