No idea where you'd find a good Vizsla but I've seen a few that were really nice dog's. Well kept secret I think. Really easy to find a good GSP. Never worked with a Vizsla, friend had one and it was a super dog. I suspect they both take training about the same forgiving of handler mistakes, GSP's are really good about that. As for what they hunt, I'd say they both hunt the same thing's. Had a lot of Shorthairs, not so good for waterfowl in really cold weather! Be a lot easier to find GSP pup's also, they are every where. One of my favorite breed's