I'm just starting out and I'm looking for a commercial trimmer and edger. Can you share you oppinions on trimmer/edger combos or stand alone units. My son and I are just starting out and we only have a few mid sized residential accounts. Mostly grass no heavy weeds but a couple have chain link fences. We plan on getting a few commercial properties and I need something that's tuff but affordable. And what manufacturers do you preffer?