I am not the one to ask about the At-1. I didn't like it very much, even though I like Andy Timmon's tone. The 36th neck is really vintage sounding if that is what you are after.
I have 4 RG's set up that I really like. One has an Air Zone Bridge, Cruiser middle, and PAF Pro neck. Great fat powerful combo. Another has a Fred Bridge, Area 67 middle, and Humbucker from Hell neck. Lower powered combo. Great growl from the bridge, classic strat middle, and tight clear neck. The last one had a Tone Zone bridge, Area 58 Middle, and PAF Joe neck. I love the PAF Joe neck, and the area 58 middle provides some classic strat tones, but the Tone Zone was a little over-the-top, and I got tired of it. It now has another Air Zone in it.