If the main consideration is not crashing and re-injuring your shoulder, I would stay away from two wheeled recumbents. Every one of the recumbent riders I know (including me) has crashed on occasion. You live in a section of the country that gets a real winter with snow and ice. That's an additional factor to consider. Trikes are really nice for eliminating that problem but the good ones are very expensive and the cheap ones come with significant limitations (weight, gear range, component quality, and durability).