Thank you HarryS for pointing me to this forum.....I am somewhat confused as to what i should purchase. So, let me tell you about myself. I am male, 81 years of age, short in stature, about 5' 3", 27 inch inseam, have moderate emphysema, and a stent. I just gave my fairly new (5 miles) decked out bicycle to my son, because i get too tired peddling. I will use the bike for joy rides around the neighborhood, trails, the park, smell the roses. 20 mph tops seems very reasonable. I just want to make sure I can return to start. I am confused about 36 Volt vs 48 Volt, but would like a longer ride, some hills. Repair, parts, Pro service/Self service is important.I wish to spend up to $1500. Any and LOTS of advice is appreciated.