I went through an attorney in Columbus, Ohio. Everything went smoothly and I was more comfortable than going through some website somewhere. I also got wills for my wife and I while we were there which I had wanted to do for quite some time. So I killed 2 birds with one stone.
The attorney it a huge gun advocate and owns many suppressors as well as full auto rifles. He specialized in NFA Trusts. I could have spent less money somewhere else, but the peace of mind knowing it was done right was worth what I paid for me.
http://debrosselaw.com/