I used our KitchenAid for years. And it got me thru, but if you really want to crank out the meat, get a bigger unit. Something with a heavy motor of at least 3/4 horse. I to had about as much meat squeezing by as was going thru the tube LOL. In either case, the colder your meat, in a semi frozen state is what you want. You want it to cut when going thru the plates, not squish. My first batch of Kielbasy when I joined this site, I ran thru our KitchenAid. 25# batch took me I think 2 hours. When I bought my bigger unit, I ran the same size batch in about 5 minutes.
Like I tell the wife, anything that I buy that makes this hobby easier and quicker is justified