I've got three of the Ti Duopars, had 'em for years. I just got a NOS eco?, the steel version. I haven't weighed it, but immediately noticed "This is heavier!" It felt more solid too, though I'm not sure that's a good thing. I haven't used the steel one, but the ti is just a lovely shifting derailleur.
Dan Artley Parkton, Maryland
Jerry Moos asks:
The Ti Duopar listed raises a question. I've acquired several Duopars on eBay lately, none titanium. The one on Hilary's photo looks very similar to mine. Exactly what parts of the Ti model are Ti? Can you tell the difference in a photo, or do you have to hold it and feel the weight difference?