I agree that for an English Bull Terrier you would have to be sure there is no chance of BSL banning your breed, you have to make sure your insurance will accept it, and you have to have a stable home environment because should you have to move and or rent you may not have the best of times finding a place for your "vicious and dangerous dog".
I think the elkhound is a little hardier because its much less popular than the vizsla. Typically the ones I've known were overweight and hypothyroidism seems to be one of their main issues, which isn't a bad one compared to what some other breeds are dealing with. I don't think they are the greatest for training. They're stubborn. You have to be up for the task.
Vizslas are extremely popular in WI where everybody and their neighbor owns some sort of hunting dog. Lots of health issues that are hard to deal with as some of them are immune mediated and they can be sensitive to medications and even flea treatments. Lots of anxiety issues. From what I know of them, the can be very timid if not socialized well. They crave being with their people. A vizsla would be great for an active lifestyle, but be careful overexercising a puppy.
Honestly, you shouldn't be too concerned about which to pick. You're a proactive pet owner. Most pet owners don't do anything other than the basics for their pets. You've got the will to make the best of whatever dog become your next family member.
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