We run bostitch (don't know if I spelled that right).. Work great and nails and parts are easy to get anywhere..
I've used the Bostich on the pavilion. It's my contractor's, but I have run it a good bit. Nice tool and he swears by it - uses it pretty much daily and has not had any issues. He also said the DeWalt is a nice nailer, too. I was looking at the DeWalt or the Bostich but haven't jumped yet on either.