After about 3+ years, my T-Touch Titanium just stopped working.  The local authorized Tissot jeweler said he didn't have the right battery, so I sent it to the Tissot repair center to have the battery replaced.  After looking at the watch, they said I also needed the crystal replaced, so it will cost me $322 plus tax and shipping to get my watch back in working order since they can't send back a watch that is not working within "factory" specifications.  I have had a Tag Heuer for over 5 years and it has run flawlessly over that time period.  Tissot charges about $200 minimum to have a watch cleaned and battery replaced, while Tag only charged me about $85 when I had it done last year.