hmm... Thanks for the advice. Here is the deal... I needed a new wheel for the fuji road bike that I had. So I figured instead of buying a new wheel and getting it installed I would buy this bike for $40. It looked nice but I've been cleaning and tuning it before I test it to see how it rides. Now thought I may stick to the fuji after putting the wheels on this bike on it. So could I please get reviews/opinions on the following two bikes I also own:

Koga Miyata Ridge Runner (mountain bike) - it seems to be a very good quality 80's mountain bike... I'm not sure though
Fuji S10-S (road bike)


Also, I am new to the whole cycling thing and find that I am enjoying it not just for commuting, but also for fitness. I do not want to spend and arm and a leg on those fancy modern bikes. Everyone I ask suggests getting a good quality used 80's bike of of craigslist or some place like that. What kind of bikes/brands should I be looking for if I want a bike I can use for fitness (which I guess means long rides on flat scenic routes )?

Thank you for any advice.