Let me tell you, the Paslode impulse nailers are pretty nice. I've put lots of nails through one, and there is no comparison to a pneumatic nailer. You have a lot better range of motion and can work a lot quicker when you aren't dragging a hose around behind you. It's also a lot quieter when you don't have a bunch of air compressors running all day. They aren't the cheapest thing on earth to use with the gas cylinders, but they aren't terrible. My friend runs about six pneumatic nailers and has two impulse nailers. He gives the people who are in more awkward positions or whatever the Paslodes.
Since they don't require electricity, you can use them in places where you would otherwise have to run a generator. We had a place where electricity was going to be a problem for a while after they wanted to get started, so we precut the framing offsite and hauled it in. Most of the guys were pounding nails, but I was doing it the easy way with the nail gun.
They are plastic, so you don't want to drop them off of the roof. I didn't ever have any other problems with it, but I didn't run hundreds of cases of nails through it, either. You just need to be sure that you have plenty of cylinders and an extra charged up battery around, because you can flat go through the nails!
