I have a rotozip but I only used it a few times. It is too bulky to cary with you. I like the klien red handled cutters for cutting greenfield. They are smaller and lighter. They can cut sheet metal in a bind too. Trouble is the get dull. I have sharpened mine a few times and wondered if Home Depo would warrenty them. A good pair of side cutters will do the same but are a bit heavier. I think the best for green would be tin snips but that also is too much to lug around. (I like my tool belt as light as possable).

Tom