I bought the visatherm stealths so I didn't have to worry about breakage. I never though I would have to worry about them splitting open. I would assume you wouldn't have to worry about that with titanium.
I run this exact brand heater, can you tell me exactly what happened to it, and about how long you had it for? I'm getting more paranoid as I type...
I hadn't heard others were having this same problem. I always heard good things about them. I will have to do a search.
Reeferhead, I am glad to hear you have had good luck with the glass visitherm since that is what I am using until I get my titanium's. I was a little nervous since the are the same manufacture as the stealths.