I rode upright bikes for years and switched to bents a few years ago for the comfort level. No more sore neck, back, wrists, arse, or tingling fingers, etc. On an upright bike I have to stop every 30 minutes to give the backside some relief, while I can ride for hours on a bent with no discomfort at all. Bents put you in a natural position for enjoying the scenery as it goes by. Seats are generally made specifically to fit each brand, and sometimes even specific models, and they are not cheap, unfortunately. Some manufacturers sell replacement seat parts so you may get off for much less by simply replacing the mesh, or cushion etc. rather than buying a whole new seat. I appreciate your sincere inquiry, and wish you and your brother all the best. Happy Trails!