I absolutely love Helia she is wonderful and she was helped out by Julie Stade from BJF working dogs (dobermans and german shepherds) in finding the stud for her last litter. I would have no qualms about recommending Protea - not only did she extensively health test her bitch and had the stud health tested, she also swabbed her entire litter of 13 puppies to be sent to Embark in order to know their COI (and by extent their DNA carrier/at risk/clear status for multiple diseases).
Not as familiar with Mitch as extensively, just by name, although I seem to think he was maybe on this forum at some point? I think the most important thing in any case of course is to ask for proof of health testing.
I also really like her! Her rainbow litter was stunning.