CELLO Encore or PASSLABS X1 /X0.2

i have the choice between this two preamplifier , i know the CELLO but i have
never heard the PASS , the strengh for the pass is the remote control but
what about sounding differences bewtween them?
no one ear both ?
I once owned the Pass Labs X.02. It was a very good preamp. However, the Audio Resarch Ref3 totally outclassed it and they are in the same price range. I have never heard the Cello preamp.