I am a Ti fan, very comfortable and I like the fact you can just wipe them down and buff them up and they look like new, it takes a bit more effort to keep a painted frame looking pristine IMO.
All mine have been bought as frames and built by me.
My first one was a Airbourne (now Van Nicholas) Zepplin, bought from Cycle Sense Tadcaster they were selling them off when they changed to Van NIc, I sold it to a friend (why I don't know) its still going strong and looks like new.
The second was a Sunday Cycles (now Sabbeth) bought of
eBay it was new won by the seller for winning a race series, it was a very light double butted frame, I was cleaning it one day and found a crack under the top tube very close to the head tube, as I worked in engineering and worked with titanium we had some top class titanium welders, I had it welded up and rode it fixed for a couple of years, I sold it and think it is now back geared.
As I was short of bike while the Sunday was repairedI put all the bits of it on to a new Planet X Pro carbon frame, it was OK but didn't have the feel of Ti and I was never completley happy with the compact geometry, so I replaced that with a Kinesis Gran Fondo MK1 bought from Wistanleys which I still have it takes guards and a rack but limited to 25mm tyres (Mk 2 is available with discs and also more tyre clearance) a great bike thats a keeper.
I got an itch to build another so went for a Van Nicholas Chinook frame bought from Fat Birds this is a bike for fast rides, another keeper.
I was knocked of my Cannondale CX, breaking the forks (also my shoulder) the deraileur hanger and rearstays, I managed to straighten the rear stays and put some Chinese carbon forks on it, but I was never happy with it although it rode OK.
So I bought a Pickenflick frame from PlanetX for a very good price, another brilliant bike I did a 100+ on it last week with a lot of off road sections with no problems, its the most comfortable of the 3 Ti bikes I have, but I suspect thats a lot to do with the bigger softer tyres and Charge seat than the frame, another keeper.