Given your age, you might want to have your ears checked. Inner ear problems can really affect balance. Beyoond that, I think LWB recumbents are safer because your legs can easily touch ground and, they resist over the handlebar accidents. I watched one of these and a 250 lb. man went air born and landed on his eye. Very ugly. I couldn't believe his neck didn't break. However the serious head injury was bad enough.
At 57, my balance isn't what it used to be. It's comforting to know over handlebar accidents aren't part of the picture anymore. BK