The Stratus is a Long Wheel Base recumbent, whilch may well be the style that is most comfortable for him. When trying other LWB's, he should pay close attention to the dilfference between seat height and bottom bracket height. A low bottom bracket, relative to the seat, means a more upright riding position. A higher bottom bracket means a more leaned back position. Which is best for him is purely a matter of personal preference. He will need several rides before deciding. He should take his time. bk