Went to Lesco to look at aerator products and does any one have any opinions on what models they recommend.Would you use a pull behind or a walk behind. What about the Renovaters? We are trying to expand our services and are new to these products. The people in our hometown Lesco office have just gone threw major employee changes and the temporary managers do not know any more than I do about them. Any other products from any other manufacturers that work just as well?