Best 3 tube preamps under $18000?


I will be pleased to know your opinion, about which can be the 3 best tube preamplifiers, with a price, NEW, under $18.000. I want to use them with SS amplifiers.
emigene
If I was spending $18,000.00 on anything,I think I would be doing the legwork myself.I'm sure folks here mean well but are you seriously going to consider spending that much money on something recommended by a complete stranger?Just a thought.
I second the VAC Signature; VAC Phi 2.0 is also very good, if you can find one for sale.
You absolutely have to consider BAT REX- it bettered some of the preamps, mentioned above, in my system, in terms of the SQ.
Speaking of functionality and flexibility, I cannot imagine anything better.