Ranch style homes are usually long and low with a bare minimum of interior and exterior decoration. The idea is to create a casual and informal lifestyle, usually with access to the outdoors via large plate glass windows, sliding glass doors, and patios or decks. Ranch style home plans normally imply a single story construction with a low and long roof line, with a cross- or side- gabled or hip roof.
Modern home plans come in all shapes, sizes and styles. It will be up to you to find the one that best suits your needs. If that's a contemporary plan that includes an open layout, you can find plenty of great plans available to choose from. Of course, you also have the option of creating your own home plans based on your requirements, be they extra bathrooms for the teens, home office or workout space. Perhaps you want an open kitchen and lounge area, but a private dining room. Maybe you prefer the entire lower level to be open but want the sleeping areas divided accordingly. It really doesn't matter because you can get whatever you want.
But the difference between classical and contemporary architecture is that few of the traditional building and ornamentation methods are still being used, since modern architecture has integrated modern technology by embracing new methods of building, new materials, and an accent on functionality rather than embellishment. For example, one common feature in contemporary architecture is the mixture of stone, wood, and brick wall materials on the same surface.
In order to choose the best modern home plans, you should always start by researching architectural design services and builders to see what each one offers. If you are capable of getting referrals from a friend or family member, consider that option when looking for builders as well. If not, it's nothing to worry about.