I know this is your first post but you should ask this in the Loung Distance or Touring Forums.

If you want a very knowledgeable opinion, ask Raymond Parker on his site.
http://veloweb.ca/

Is Ti reliable? Yes. Very.

Is it flexible? Yes, and that makes it a great material for a Rando or Touring bike. Manufacturing techniques and design have changed since the early Ti bikes and they have become much stiffer where needed for efficient power transfer.