I have been put off titanium frames too. In April 2011 I bought a Rocklobster titanium from http://www.merlincycles.com/ Ti frame, SLX group set Marzocchi 100 mm fork, 1650 GBP. Like many people I thought this is a bike for life, because of titanium´s legendary fatigue resistance, Sure enough it was a great ride, very responsive, I used it for guiding with http://www.bikingandalucia.com, for 12 months, until April 2012, when I noticed a profound crack on the top tube 10cm behind the head tubed. http://www.merlincycles.com replaced it with 2 of their MALT 2 frames (the Ti frame is no longer available). I have heard too many accounts of Ti frames breaking to be interested in buying another.
I still have the Rocklobster titanium frame but cannot up to press find anyone to repair it in Granada province, so if anyone can advise me where it can be repaired, UK, Spain or anywhere else I would be grateful.
At the moment, I am using a RAMONES CRMO, (http://www.commencal-store.com/PBSCProduct.asp?ItmID=10251220), cannot fault it (possibly a bit heavy at 13.4 kg) but ideal for guiding here in Spain.