I have a few. I EDC on my cell phone pouch a 2-stage ARC AAA with the 3/4W X 60ma low. I EDC on my keychain a 2-stage 3/4W x 60ma AAA. I keep in my pocket a AA 2-stage with a 1.5W high and a "special request" 90ma Low setting. I have a 1W 2-stage that was sent back for a "mod" to the 2-stage switch contact to correct a problem. I love these lights.
They are all excellent lights and I wouldn't give up any of them, but the AA is my favorite. I know that Eric had to put in some extra effort performing the parabolic grind on the AA model, and that was highly appreciated. More than likely he ate some cost on the time involved on that one, since it was the first of its kind and required finding the right tool matchup. I mentioned in a post and in a message to Eric that the AA light worked with Alkaline & Lithium batteries, but had some difficulty with many NIMH batteries due to the layout of the 10mm circuitry vs the larger size of the AA battery buttons and lo and behold he's come up with a new circuit board which puts all of the components on the other side of the circuit board. I am eagerly awaiting the return of my second AA light Mod with this new improvement, and also a 2-stage red luxeon AAA.
I have also been accumulating more ARC AA & AAA heads and bodies for future mods. No doubt that Millermods will see some future business from me.