I'm in the same boat, 5'7", and I'm riding a 23" Sports also. [Well, Sprite, but I think it's the same geometry.] Eventually I'll get a 21", and see if I like it better. Until then, I'm not stopping. I can't remember the last time I had to jump down off the saddle, onto the top tube--at least not while riding on the road. Also, why do you have to get rid of a bike? Do you have a big pile of them already? Pop the pedals off, maybe loosen the handlebars so that you can turn them relative to the front wheel, and it should store in a rather small space.