I can see why some ppl may prefer Primare sound over the Krell sound. That is a personal thing. What I cannot understand though, is how anyone can claim Primare is better build.
I mean, I actually own both - Krell in my office system and Primare in my living room - so I'm not biased in any way, and have first hand experience. I have also opened both to see how they are build inside, and I can tell you that Krell's fit and finish is far superior to the Primare, not vice versa.
Krell housing oozes quality, beeing all aluminium with billet aluminium corners, where Primare is a common aluminium front/pressed steel combination. Primare is nice and stylish, but clearly not to the Krell standard.