Weberhaus would be my first choice to talk to if I were in your area. She has Czech lines.
Your choice is not limited. There are many good breeders in the U.S.
David - you are in Europe. What do you know about what breeders are where in the US?
It's MICHELLE, scarfish! My name is MICHELLE! Jax is my DOG!
~The strength of one's opinion should not exceed their knowledge on the matter~