Fitness bikes offer a great compromise of road bike speed and city bike comfort and versatility. Perfect for spirited road/path rides and even commuting or running errands. You can go fast when you want to but can still take it easy when you just want to just enjoy the ride.
Dual Sport Bikes
Dual sports are more along the lines of a true hybrid. Great for city, path, and even light trail riding. 700c wheels roll fast on pavement but with a more versatile tire, they better handle different riding surfaces than a road bike or fitness bike. Suspension forks help to smooth out the ride regardless of where you are riding.
For shorter, recreational rides and for pure comfort, a comfort bike is the way to go. A more upright seating position ensures you don't have to be leaned over to enjoy the ride. Most models have a suspension fork as well as a suspension seatpost, this really smooths out the ride and absorbs all those bumps you may encounter.