You missed my favorite, the Kona Jake:



The 2013 model has a triple, but they switched to double for 2014.

The internal cable routing is a nice feature. I've got about 2200 miles, lots of them in the rain, and I'm still happily using the original cables. I think Tiagra is the sweet spot for commuting components -- very good performance at a reasonable price.

Regarding 650B wheels, if I manufacturer did that, I'd think they were crazy. It limits tire choices and for commuting wheel size really isn't such a critical issue. The only advantage I see of smaller wheels is that it allows better fit for smaller riders. If that's an issue, maybe look into the Salsa Vaya, which has 26" wheels in its smallest sizes.