All pack animals have their pro and cons, and various other "issues". For that matter, so do most hunting partners!
For many years I used llamas, hence the name. I have also packed with horses, and been with others who used goats. I actually prefer to walk, and was injured one too many times by horses. Horses / mules are still absolutely the best way to move tonnage in the wilderness. I was willing to accept a reduced weight capacity, in trade off for easier to use llamas, that will very rarely hurt a person. Llamas are also very easy to train, and quite smart (sometimes smarter than their owners), but do tend to walk at a modest (i.e., slow) pace. Goats are at the lower end of the useful load bearing capacity, in my opinion, but enough of them can get the job done. I've seen a few that absolutely hated to be left out overnight in the rain, and did everything possible to join me in my tent. NOT my idea of a restful night. Others plan accordingly and bring a separate shelter for the goats.
In truth, I rarely use pack animals anymore. While limiting in some regard, I really like the freedom of not being dependent on an animal as part of my hunting team. Admittedly I am a bit unusual, however, as I generally prefer to hunt alone. Something about the solitude of being back in the wilderness with only my backpack makes me happy.
And that is really the goal. Use whatever means makes you happy - whether it is horses, goats, llamas, or your own two feet. Just go into the purchase of any pack animal with your eyes open, and acknowledge the challenges and limitations. Once understood, you will have a much better chance of a positive relationship. There are as few perfect pack animals as there are perfect hunting partners.
Bill