SPD is easy to use and works well. It's also known as mountain bike system, but compatible and effective on road bikes. The platform is a bit smaller than road pedals, and some roadies say this makes less power, but I doubt that's significant. SPD will help you pedal more efficiently and keep pace with your husband better than platform pedals with clips. Your foot does not move around unnecessarily, but all movement is directed to the pedal. I notice a difference, compared to riding in running shoes, etc. SPD shoes with recessed cleats: can walk in them without tap-dancing or slipping and sliding of road cleats. They make SPD shoes that are like road shoes and others that are like hiking shoes. Shimano M-540 is a good value or starting point in SPD, because it's durable and has sealed bearings. There are many choices though. Eggbeaters are also designed to be easy to clip in, but I have no experience with them.