Best dog I've ever owned was from untitled parents. The dogs had the bloodlines I wanted. They were health tested. The guy just thought Schutzhund was stupid. Lol good enough reason for me. I saw his dogs work in person and was sold.
Health testing is the most important. Titles are great but not a deal breaker. I've met ipo3 dogs that should never ever be bred. I've seen titled dogs that the judge had have to been blind on trail day. Your best bet is get someone knowledgeable to go assess the parents for you.