As good as Birdman Studios and Joe is local. Joe is a former world champion and has done a bunch of ducks for me in the last year.
I'm pretty picky, so I see things in mounts others might not, so you might be happier with someone else, but Joe is top tier IMO.
Here is a mount he did for me last year. Trust me, at the point I'm spending $1600 on a mount, I've done my homework on the guy.