Buy the best one you can afford. You don't want it to break while you are in the middle of processing your deer. The middle of deer season is the worst time to buy a new grinder, I know from experience. I bought a cheap one from Harbor Fright & it broke on the 2nd handful of meat. It was about two years ago & I had to spend my hunting time to find a Lem #8 & paid way too much for it to get my deer processed.
Also use it first to be sure it works even if it is to only make some Ham salad.