I have a bit to spend this next month, and do only mowing (for 18 years now), and want to add another service. The sidewinder edger is a MOnster, and I figure one could be making a couple hundred an hour with it, the plugr (new pro hydro model) will also yield a high hourly rate. Each would be somewhat of a niche market. I think the sidewinder would give much more per hour, but the ability to advertise "core aeration" would probably give me a lot more mowing accounts. Any thoughts? thanks in advance.