I'm under 6', so almost any high-top rig is decent enough. The main attraction for me of a "B" is that I can park it in a driveway, as opposed to having to drive out of town to hit a storage area.
The ERA is a nice rig, and if all goes well, I should be getting one because of a recommendation of one in the forum (which got me to take a visit to the nearest ERA dealership.) The main advantage is its price: $20k or more cost difference. I know I probably mention this too often, but the only disadvantage of the ERA is the length -- 24 feet. However, it still is a "B" and the added length just means more room inside if one is less concerned about being able to fit in sardine can parking areas.
I also looked at a similar rig to the Navion, the Forest River Solera. The price is good, however, I'd have the storage issue (which means I'd end up never using the rig), and hitting a small town toad-less would be difficult in it.