As your body is different and unique the same should hold true for your bicycle. For good fit and comfort, you should be able to stand comfortably with your feet flat on the ground . Some of the attributes from the bikes listed above are similar to mountain bikes. Mountain bike handlebars are usually upright and wide providing stability. They are great bikes to ride off the beaten path as well as on city roads. Their wide tires and thick frames and suspension help cushion road bumps.
A Comfort bike is commonly referred to as a 'Cruiser'. The comfort bike uses a standard 26 inch tire that is commonly found on a mountain bike. It is a recreational bike built for smooth terrain, higher handlebars than a race or road bike, and a lower seat, all of which provides easy handling and stability. The frame of this bike is designed mainly for comfort with its laid back riding position which is considerably back friendly. Its suspension takes the sting out of bumps. Gel foam padded saddles with springs provide plush seating.
The hybrid bike is a variation of the mountain bike and comfort bike. It has larger wheels and narrow tires. Hybrid bikes generally use the mountain bike 700c standard tires. These tires are good for quick acceleration, climbing. It is designed for comfort and efficient pedaling. Its suspension is strong with light materials which absorb vibrations. High air pressure in the tires makes longer rides better than a mountain bike and higher speeds a breeze. While it can be taken for short rides on unpaved terrain, its best for casual riding in parks and paved trails. Due to the handlebars upright frame you are able to pedal with comfort in an upright position.
Another unique body-conscious bike is a recumbent bike. It is considered to be one of the most comfortable bikes to ride. Think of sitting in a reclining chair and pedaling in that position. It has a long and low profile back and may take time to get used to. The wide, high-backed seat evenly supports and distributes the weight of your torso, relieving pressure on the arms, shoulders and back. Some pricey recumbent comfort bikes have an electrical power feature that provides pedaling assistance.
Comfort bikes and their variations, are designed for getting away from it all and to enjoy fun-filled and stress free riding. Prices vary widely based on components and manufacturer, but expect to pay between $250 and $600 for a quality bicycle.