Suggestions for a tube preamp

I am looking for a tube preamp that will work well with my system:

Clayton S 40 ampliflier
Rick Reimer Wind River GS speakers (on order)
Heavily modified Pioneer DVD player

I do not need phono and do not want to spend more than $1000.00 used.

Here are some preamps I have looked at:

AR LS 7, LS2, LS1
Blue Circle BC 21
Sonic Frontiers Line 1
MFA MAGUS
Audible Illusions L1 or Mod 3
CJ PV 10
Counterpoint 2000, 3000

Any and all suggestions will be appreciated!