We estimate 8 to 9 months at this point, but since these aren't assembly-line bikes, be prepared to wait up to a year. The frames trickle out. They're so fine, but they're slow. We're trying to do something about it, but there's no cracking the whip on craftsmanship, and the number of builders skilled enough to do the quality we require is small. Honestly, there should be no quandary there.
Titanium is a good material for bicycle frames.
If you're drawn to that, and if that is enough, then a titanium-framed bicycle is what you should get. Traditional hand craftsmanship. If you like lugs, that is. Lugs serve as external butts at the place where the stresses are greatest. A typical Rivendell tube wall at the joint is 0.8mm.