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
Reb1208: Thanks for your response. The ARC LS 16 and Marsh A400s seem to be a good combination. Just a taste of tube warmth with all the attributes of an SS amp.
I am now using a Supratek Syrah w/DNA 0.5 Rev A+ pair to biamp Vandy 3ASigs. Just got the Syrah today, but first impression is WOW. Much more transparent than the BAT VK3i, and more emotional than the CAT SL-1 Sig that I have been using recently. Anyone want to buy a pre-amp?

Another vote for Supratek Syrah. I have tried two or three SS amps with her, and am pleased with the results I'm now getting with the Syrah and a Plinius SA-102. Good combo.
I have a Rotel 1090 amp and looking for an affordable tube pre-amp for it. Can anybody help please...

Speakers driven are B&W 803's