I want to purchase a aerator. I would love to get a Classen/Lesco pull behind but need something to pull it with. So now I am looking at the walkbehind models. The Ryan LA28 looks good but, I heard it does not do well on slopes. The Classen splt drive also looks good. Does anyone have any suggestion on other models to look at? I really am not worried about price. I just want something that is very easy to use on lots less the 1/2 acre.