Wrong speakers

Unwittingly , reversed the method for putting a system together.
Glad to have the Einstein power amp along with a Wadia
The mistake I made was to buy thiel
3.6 .
Researching this after the fact, I realize that the thiels only blossom with strong current.
So, will replace them with speakers that suit the Einstein.
Cruising the forums here , The best or most popular, desired etc
Seem to be, mbl, ohmm, sonus faber, possibly Tannoy as well.
Asking for help in choosing a used speaker for under $15K
Thanks as I find these forums really usefull