After having dealt with persistent back problems over the years (usaually kicks in on rides over 20 mi), I am considering some more "radical" solutions. 1) A recumbent of some type...I know nothing about them, unfortunately. 2) A road bike custom frame with a shorter top tube and longer head tube 3) A touring bike, minus fenders and racks. I am a 54 year old male who rides a LeMond Zurich...still have fairly decent legs and lungs, so I'd like something with a little performance. Currently I'm leaning toward option #2...I love the road bike mystique, but I'm fed up with discomfort and not being able to ride in the drops. Any comments or suggestions? Advice from riders with similar experiences would be particularly appreciated! Thanks.