We recently picked up our 17FD and took it for its first trip down around Mt. Rainier in Washington State. We're pulling it with a Toyota Tacoma with an anti-sway bar and it pulled great on freeways, twisty mountain roads, and in town. We had a camp site with full hookups, so we were able to test out all the systems. We didn't run into any problems except for being unable to get the refrigerator to run on propane. On electric, we had it turned all the way up and it froze my Diet Pepsi.
One inconvenience is that the grey water outlet and the black water outlet are separate. I've seen on some RVs you can hook up your hose, flush the black water, and then flush the grey water. On the Hummingbird, you have to hook up the hose, flush the black water, unhook the hose and attach it to the grey water outlet and then flush the grey water.
All in all, we're happy with it.