Replacement for Audio Research LS-8

Would like to replace my older AR LS-8 pre-amp with another tube pre-amp. Suggestions? would like to keep it under 3K (new or used)

My system:
Rotel RCD991 (transport only coax into)
PS Audio DAC DIII (with Cullen Mod III upgrade)into
AR LS-8 Tube pre-amp (via Kimber SS)into
Channel Audio d200 mono block (class D) via SoundString Cable
into
Acoustic Zen Adaigo speakers (via anti-cable)
Signal Cable Power Cords on everything

Thanks Much in Advance