Anyone have one? Amazon has a 7 amp Pacific International Shear SS404 for $269, and there's a 5 amp Snapper Steelhead SS304 manufactured by Kett on Ebay for $160, and there's a Malco FCS hand snip on amazon for about $30. I called my local rental center and they don't carry them, so I'm gonna have to invest. Is there a huge difference between the 5amp and the 7amp? (sorry for dumb questions, me is rookie) Any of you guys ever used one of these? I've heard the electric shears are the way to go with the Hardie Panels. We're installing 4x10 sheets of it on our house, hope it gets lighter as we cut away - that stuff is heavy! thanks for any input!