With that sensitivity it opens the doors to a whole lot of very nice sounding SET's. low power ones too.
friend has Le Scala's hooked to some 2wpc 45 tube based SET's they sound amazing he paid less then 1500 for his mono amps and a Decware pre.
Another company to consider it Finale Audio -Triode labs out of Toronto Canada they make all their stull in north America too. I run one of their more expensive SET 300b based offerings but they are wonderful sounding amps and have new in your price range.
That said I would also consider Schitt audio maybe a Frays pre and an Ager 20wpc class A amp. bet that would be a great pairing too and give you both SS and Tubes to play with.
After that i'm thinking vintage tube integrated with some upgrades.