I looked at ti years ago; being an off-roader, I zeroed in on the Litespeed Kitsuma hardtail MTB frame. $2200, frame only. I figured, being ti, it'd last as long as my riding life.
Since they're no longer made, and what WERE made are not on the market, I'll never know how it rode. And given my present 'structural' health, a hardtail frame would have been left behind a decade ago.
I've broken three FS MTB frames in this new millennium, all aluminum. But I'll have to stick with them, because FS is a requirement now.