Think I have enough time spent on the bike to draw intermediate summary about the frame and my experience with Speeder

The communication with Justin was sometimes delayed (got a reply after 4-5 days), but it was always clear, concise and unambiguous. The frame production took longer then I expected, but I also asked for some customization, which is probably uncommon for B2C side of Speeder. I asked for gloss over carbon marble finish for frame+fork and matte for everything else. Everything arrived packed in a foam wrap and bubble packages without any damage.
Now to the frame. From manufacturing point of view everything was pretty much perfect - everything that has to be round is round, seatpost fits perfectly, BB area, HT area, caliper mounts were neatly faced, thru axles fits nice and sturdy. My mechanic's feedback is the same - everything was done very nicely, assembly was problems-free.
Riding quality completely meets my expectation - I wanted a race bike with nice balance between stiffness and compliance with specific geometry that enables my aero position for extended periods of time. It is quite stiff at BB and HT area, seatpost and seat stays absorb bumps well and after long ride on bad roads I don't return home beaten up like on a full-on aero brick.
As for speed and aerodynamics I don't want to do any specific testing but my position resembles my aero tuck on my older CF5 Merida Reacto. I am somewhere around 1-1,5 kmh faster at my steady state long flat tempo efforts (~300-340W@40+kmh). So in no way the bike is slow!
Above in the thread there were concerns regarding the bike maneuverability. I can attest, the bike is more nimble then Light Carbon LCR0X, which has shorter wheelbase. Longer wheelbase is compensated by steeper headtube and generally reminds my above mentioned Reacto.
With the mix of Ultegra and 105 Di2, Bigrock Ti axle cranks, Elite Edge wheels, 2nd gen The one handlebars and last generation ZTTO Ultimate monoblock steel cassette, the bike wights slightly above 7,5 kg in size 535 including pedals, cages, computer and Varia mounts. That being said, if you choose your components with the weight in mind, 6.8 kg build can be achieved quite easily.
I must mention UDH as another cool feature. Within the first week of riding I managed to crash badly and bent my hanger in the process

Quite easily, I have found the replacement at my LBS on the very next day.
Overall, I can totally recommend the frame - if it fits your needs and is appealing to the eye, go for it.
