Lots of choices, and one is as good as another. If you are in areas that allow for easy travel, I would go with a side by side. If your in tighter hunting areas, I'd go with a 4-wheeler.
Only reason I posted is to let you know of a little accessory I purchased about 2 years ago, that has taken ALL the work out of hunting. I'm 65 years old, and it got where I was really having trouble lifting my game up on my 4-wheeler. I hurt myself several times trying to lift a hog or deer, and get it tied down to get it out, and back to the truck.
It's called a "Hook-a-Rack. I'm not a salesman for the company, but I should get a commission, as many of them as I have sold for them, from people who have watched mine work.
They will fit on virtually any machine, and will lift up to 350 lbs and secure the load with absolutely NO HEAVY lifting on the user.
At my age and physical condition, I can't imagine hunting without one.
Just a thought.