I was unconvinced by the Ti hype, and then owned a Hummer. Kept having to check the rear tyre was still up the first time I rode it, so convinced was I that the soft ride was down to a slow puncture. There is something about a good Ti bike, it's just…I dunno…weirdly flattering. Everything is just a little bit better, less beaten up over a long ride, slightly faster round your loop, just a gear higher up that stiff climb…A pound doesn't sound much, but combined with a well designed Ti frame it makes a huge difference, even over a good steel bike.
Are they worth the money? Dunno, that's up to you.