When we first started looking, I did some research on the Krogen. I found a surveyor who was highly recommended by several sailor that I know. The surveyor indicated that he had surveyed 3 Krogens and had nothing but praise for their construction. His remarks lead us to make a 10 drive to look at one.
Ultimately, we determined that it was not the boat for us, but that was based on our personal wants/likes, not their build quality or sailing characteristics.
As relates to how they sail: we read/heard mixed reviews.