Hi all, I’m looking for a tricycle for my father. He turned 90 yesterday and is still very active. My son is just learning to ride and they would like to do this together. Schwinn Meridian seems like a great bike but, with gears (probably beat in Asheville), they’re close to $1000. I need stability and quality for him to be comfortable. No gears is better than something less stable.  Any suggestions on a good bike??