the Moby already has the airsail on it and I'm fighting heat issues, but it is the smoothest bike I have. It's running Columbia commuter forks right now. It would be a nice build, but it would also be one of the more expensive.
I was partially leaning to the Pinto or the Califfo. The Pinto is already in pieces and the Califfo is just a neat looking bike that is surprisingly strong. Both need some parts to run.