I've owned the renovator 20 for 4 yrs and its a $$$ maker. The only thing I use it for is slice seeding. Min. charge $200 and thats just for a few spots, lawns are sliced in at 10 cents sq. ft. and if there watered and cared for like a new lawn that is what the results look like. I never used it to seed bare ground on a new install.