New member here.....first post. I'm 6'3, 190 lbs looking for an ~all-purpose bike that can handle LA's city streets as well as the occasional dirt road. Have some arthritis so prefer a more upright riding position. I hear that mid-drive is superior to hub-drive....true? Not crazy about buying a bike sight-unseen unless it's returnable. Would like front suspension, comfortable saddle, riser handlebars (or ability to add/adjust.). THANK YOU.