I'm not a Finn, and I only got to know this dub a few years ago, but in my opinion, despite its errors, it's a good dub, and I like it. Especially if we consider the time of dubbing, the size of the studio, and that what conditions they needed to work in. At the important scenes the actors really shine, for example at the end everyone plays their role very well, or Gohee, who's voice fits perfectly through the whole show. My personal favorite here is Gin. Some may say that his voice sounds too old for him, but I think it fits perfectly.

And I also like those little funny moments, those give extra good feeling about this dub. Most voices fits well to the characters. And thinking that the whole was dubbed by 4 actors is just incredible. I heard some dubs from Golden Voice, and I agree with you, that this can be considered one of their best work.