Got my At-6666 today. So far, I'm liking it. Definitely a little better than my AT-5555n. Gonna run it in the mobile.
I have been running a 5555 in my truck for a few weeks now. Way better than the Galaxy 99v that I had in there. I might end up with the 6666 in my other vehicle when I take out the anytone smart and put it in my golf cart.