I use a Harbor Freight gun and brand name nails I bought from Lowe's. I thought they were Porter Cable but I see they have Hitachi now. I have never had a single misfire. Its a cheap looking gun, but has performed flawlessly. I would buy a variety pack of various lengths of quality nails and give them a try. A thousand are less than $10. That would be a lifetime supply for me.
They hold better than I thought they ever would.