My Cabelas 1HP with the #22 neck has served me well for several years. It sure beat the heck out of using the #32 manual grinder I have. The first grind goes as fast as you can feed it. The second grind is slower, if you feed the neck too quickly. Feeding it slower keeps the meat from riding on top of the auger.
Some people complained about the neck getting warm and heating the meat. The culprit is the friction between the auger and the delrin auger bearing. Putting a light coat of cooking oil or fat on the back of the auger prior to grinding will solve this problem. Keeping the meat cold is also key. If you do the above, the grinder neck will stay cold.
You should also have one cutting blade for each grinder plate and keep them as a matched pair. This will keep your blades sharper longer. A sharp blade will cut the sinew and keep the holes on the smaller grinding plate from getting clogged.
The LEM looks like a good unit as well, so I'm sure either will serve you well.
