I am a proud owner of the Storck Fascenario 06 for all 3 weeks now. My bike came up to 5,3 kg including pedals (speedplay zero) and Garmin 800. Most importantly this bike is working! This isn't just very nice bike to look at, but great to ride. Some of the ultralight bikes have so many issues, gear changing is awful no breaking power ( as with zero gravity Gravitas breaks). This bike however is just a dream in all aspects, the breaking power isn't any different than my SRAM Red. I have just raced this bike in Germany on the Nürburgring, and had a highest speed descending clocked at 97,8 km/h. I must admit though, at first this bike is very nimble, almost nervous compared with my Cannondale SuperSix, but once you get well under you, it is just amazing!!! It is like driving hothatch vs proper sports car like Ferrari (provided you not fan of other sport car brand).
I also ride AX Lightness SRT 24 wheels, and are the most amazing wheel set I ever had (also have the SRT 42 and Lightweight) very, very light only 850- ish gr., and surprisingly very comfortable (I have to check every now and then if I didn't get flat) being very stiff.
Once on the wheel subject, it is very easy in fact easier to change the wheels on Storck than Cannondale. No problems with breaks, or gearing.
All in all, if you ever wanted to get a bike that will be very advanced (currently the most) for decades, get Storck.