I'll roger that. We towed a BOB to Grand Canyon with a Tandem Two'sDay. Poor choice. We then bought a two-wheel trailer. It worked much better, no wig-wagging back into the bike.
Yup! The Nomad's the one for me. It is also easier to access your stuff and stands up by itself. I've never used the one-wheeled types, but have toured with people using them, and it seemed to me (and even them) that the two-wheeled Nomad was the better choice for tracking and convenience.