the tough question: Which preamplifier? and why

Now that the slap fight is over, I stand corrected the pv10 is 800 ohms and the Mac is 10Kohms so the 10 to 1 ratio applies...

I am using ARC VTM120 SE and pair it to Lumley Reference LV1 preamp. I would like to upgrade my preamp and there are two choices that pop up:

1. EAR 868
2. Aesthetix Calypso

Which one is better? I am spinning LP12, with Moon LP5.3 RS and its dedicated power supply, Siltech LS188 speaker cable, Stealth Meta Carbon interconnect, Stealth PGS 3D interconnect, Siltech Octopus Reference power distributor, Ensemble Elysia speakers.

I listen to lots of classical musics, jazz, some pops. Thanks guys.

Tvad, it does sound warmer, richer, cleaner highs, better seperation, better tonality all around. This was not the case when these preamps were connected to a Classe amp which has an input impedance of 47K.