Ti is a very nice alloy. Very strong with the weight of aluminium. But i think it's a bitch to work with (weld or cnc).
I dont, myslef, had to work with Ti but that's what i heard. Maybe someone who worked with Ti will put his 2 cents.
I still have nightmare about Dural, who is a very nice aluminium alloy, but was a bitch to pour,cast,weld,cnc, name it! Maybe Ti alloy fall in that category, if so, if you're not in aeronautic or F1 racing, it probably doesnt worth the trouble.