I'm currently having an R&O pit built, non comp, so I'd say call Billie. Out of the three, I can't see any issues with any of them and to me there is something I really like about Pits by JJ. That something is more than likely shipping costs to AZ though.
One thing I would look at is shipping times. Once you write the down payment check, you start daydreaming so make sure it's within a reasonable time period.
Little Miss BBQ