Well in my experience, when people talk about 16-bit RPGs, they're usually only talking about the SNES (especially on the internet). Alot of them don't know that SEGA had alot more than Sonic going on.
But yo...and I mean YO... Shadow Run was THE SH*T!!! I just downloaded the rom so I'm probably gonna get back into it soon, and I gotta agree, that's one of the best 16-bit games I've ever played, let alone RPG (i'm sure some would say it's not).
And Hazzard, great choice on SF. I can't tell you exactly how long it is, but it's definately a classic. Be sure to read a guide though on the subject of promotion because i messed up a save file or two doing it wrong.