Opportunity to buy the best Preamp... but which?

The absolute best preamp does not exist any more than the absolute sound does, with the exception of the magazine that owns that title. Too many variables interact to produce countless impressions and outcomes. With all of the colorations out there---especially those of every instrument and component---the most meaningful scenario of best comes in the form of a question: "What will constitute the best match for my system in terms of the kind of sound that satisfies me most ?" And that doesn't even come close to a definitive and/or collective notion of best.

You might want to look at and listen to the Joule Electra LAP 150 Mk2, which has line and phono stage capabilities for most low output moving coils. I'm extremely impressed with its combination of dynamics and musicality + asking price. I've owned or home auditioned the Supratek Cortese, Shindo Masseto and Audio Note M3, all very fine preamps, but, up to this point, the Joule is the one that has truly won me over.