if you get one , get the best you can afford.if you buy a cheap one,then thats what you gonna get.(Cheap)
The motor is the big difference.I have one with a 3/4 HP. motor and it does fine.I grind 8 or 10 deer and as many hogs a year.I paid $350.00 for mine from Bass Pro and have not regretted it yet.
I started off with one of those $100.00 ones.it is in the closet gathering dust.they just don't do the job.
JMHO