You know, I use that exact same model as my pedal bike.
I also have a Trek model 820. Maybe that's not the Rolls-Royce of bicycles, but it ain't bad and would certainly seem to be a better bike than the Roadmaster. Yet I definitely like the Roadmaster more than the Trek. Everything works fine, it's easier to maintain and it's more comfortable.
It really is a much better bike than one would think. I'll bet you'll enjoy it.