Have any of you used the walk behind blowers. I rented one this weekend, and it was a cheap one, it sure did move some leaves. We did a resort which usually takes us 2.5 days, and by using this blower and mulching the leaves, we knocked our time down to 1.5 days. How expensive are some of these blowers? Our the worth it in the long run? I think if I was to make an investment like that, I would have to change from hourly clean up rates to job rates, do to how effecient it is.