OK finally a decision was made to order a TanTan FM639 frame with handlebar.
Custom paint for 1 color is now around 100 US$ 2 colors 115 US$ and 3 colors 130 US$.
Are there any FM639 users in the forum that can share their experience?
The frame will be built up with Shimano 105 Di2 and Elitewheels.
BR Chris
Hey man. With my experience i think you should go with Winow FM166, which is better than TanTan. They also have FM237 for aero and FM238 look very similar with Elves Falath Pro (im check at their website and every number are the same, so magic. Maybe they OEM for elves).