What pre's are you typically building? I have a PL2000, 3000, and 3300 that I bought with the intention of merely recapping with direct replacements with upgraded voltage. I also have a C1, a C2, and an Acurus RL11 that I believe I picked up on Joe's recommendation. I want to build two or three systems and then sell the rest.
Can't lose with the RL-11
The C-1 and C2 are also excellent candidates with the C1 being the better of the 2.
I don't care for the PL Preamps and avoid them.