A great multi-purpose framing nailer.  The consumables can sometimes sneak up on you, expense-wise, but the convenience far outweights that.  It's a lot lighter than it looks, and will shoot a 3 1/2" ring-shank nail through wood with ease.  For deck and dock work, there's really no better tool.  Mine has been maintenance free, but I do follow the instructions on cleaning it.  Also, make sure you're aware that this gun doesn't include the 'No Mar' tip.  The gun has a 4-prong nose that is the safety; i.e. you have to depress this on the wood before the gun will fire.  Paslode designed the prongs to work well in toe-nailing situations, but be warned:  If you're doing top-level deck work, you'll need the 'No Mar' tip so that you won't leave behind 4 little marks at every nail shot.  The 'No Mar' tip is a simple replacement nose piece that has a piece of rubber, instead of steel prongs, for it's bottom.  No biggie, just wanted to make everyone aware of it.  For pure framing, you won't need it, though.