A 1hp grinder is a hoss of a machine. Most descriptions for grinders that large are "heavy use". The 3/4hp grinders are labelled "frequent use".
I got the 1/2hp because I make sausage twice a year, and I may use it a couple more times for random stuff. Usage is "occasional use" on the website for one that size.
A 1hp is hard to pick up by yourself, and all the parts are bigger, meaning more stuff to clean up.
I have used a countertop 800W, a 0.35hp, a 1/2hp, a 1hp, and a 1-1/4 hp. After all those experiences I bought the 1/2hp.
It took about 15-20 minutes to grind 90 lbs of meat. We did it in two batches, so about 10 mins per batch, just for reference.
Price is also a consideration. I paid $289 for the #8 from LEM, but they had a sale at the time, and it was a couple years ago. They're up to $399 now. The 1HP will set you back $700
Cody
Fightin Texas Aggie c/o 04