I posted my Helix OS when I first got it and now it has been almost 18 months later, with a few modifications. I also posted my Lynskey R330 a while back.
I have almost 10k km on my Helix OS and about 2000 km on my R330 but all it takes is a swipe of my trusty scotch brite pad to restore the finish to its original bright brushed finish.
The Helix OS has become my defacto rainy day bike due to its complete lack of electronics.
The stack and reach are almost identical with the effective top tube, seat post height, stem, and head set spacers. The Helix OS feels faster and more responsive but the R330 is more comfortable on centuries and 200 mile long weekends.
Mark