I've got a HF 21º cause I was too cheap to spring for a good one.
I've used it to do a little remodeling around the house and to put up some shelves in the garage.
It uses strips of clipped head nails.
I haven't used it enough to comment on its durability or quality, but so far it's punched a nail every time I pull the trigger and I haven't had to get the hammer out to finish any of them off.
For me it was one of those tools that didn't warrant going top of the line. It's something I probably use rarely, but really appreciate having it when I need it...
Programmer - An organism that turns coffee into software.
If all your friends are exactly like you, What an un-interesting life it must be.
"A door is what a dog is perpetually on the wrong side of" Ogden Nash