BikeFridays are excellent machines and being chromo are strong and durable. They did come out with a 16 inch wheel bike, the Pakit which separates quickly, but the old ones all fold. As far as being 20 years old, niot a big deal. Sachs 3 speeds have a good rep, and for a while Brompton used them, so an LBS that has sold Bromptons may well have someone who has worked on them before. Unlike most folders, BikeFridays were usually made to order so a BF made for a 5ft person would have everything in proportionate geometry. Personally, I would prefer a 20 year old quality machine than a low end Al bike.