Top ten tube preamps

Just wondering if a desicion can be made based on the offerings? Synergy with amp must play a big role so it's a good place to start I guess. See what others listed here then peruse the forums to see if any threads mention if the pre matches with the amp one has already.

To my ears the Aesthetix Calypso is phenomenol, in this hobby one doesn't know how good the sound can be until one hears better. For now I have a hard time believing my system can get much better, so my vote goes for Calypso.