I'm looking for consumer reviews,recommendations on wood chippers. I'm sure there's many of you, the consumer, that have experiences with wood chippers. I have approx 6 acres of fallen branches etc. that I need to clear and then hopefully many years of ongoing maintenence. I'm interested in something 'decent', 8 HP or so, engine driven and best bang for the buck. I'd also like to know which are metal and which ones are plastic. Thanks.