Best Tube Preamp & SS Amp Combos


I am looking for opinions on tube preamps and SS amp combinations. I currently own the Pass X-1 and X-250 SS units. I would be looking to spend $5K - $10K on the combo new or used. I recently heard the Sim Audio W-5 SS amp with the Art Audio new Gill tube preamp and it sounded really nice. I will probably try the Art with my Pass but would like to know what other combinations to consider.

Thanks and Happy Listening.
bigkidz
ARC ref II mk II and Krell FPB series amps are awsome
together! I used to own this setup, I miss it.
Try a BAT VK-5i with the x-250. The BAT was used extensively in many a suite at C.E.S. and the Stereophile shows in the later '90s and was a mainstay in many reviewers personal reference systems. I am using this pre with Threshold SA-1 160watt pure class A monoblocks with glorious results. It would help if you mentioned your front end and speakers that you are utilizing.