so I really don't know how much better a high-end branded titanium frame would be.
IMO high-end (aka more expensive) are no better, I have said this before, so apologies for repeating myself.
I have had six Ti frames, the OnOne Pickenflick being by far the cheapest and the best.
I have just built a Spa Elan Ti, they have a new frameset so were selling the old off, but it was more expensive than the OnOne, I went to buy a steel Elan but couldn't resit the Ti.