I've always found On-One to be quite quirky. In a good way though. Obviously the vibe has changed since designer Brant left, but the product range seems to be exciting and inovative again after a bit of a pause. I'd love to get the new Carbon 456. It looks amazing and just the job for Black Route climbs. 😀
The Whippet looks really interesting too, though if I went for carbon again I'd want it over-built like the 456.
My ScandAL (like everyone else's) was very delayed at the product roll out, but I couldn't be happier with it. While I spend most of my time on the full susser due to the local terrain, when I do take the ScanAL out, it never fails to delight me. So lithe and compliant and blisteringly fast too. I'd race with it without a moments hesitation. It's a truly stunning bit of frame design and proof that Brant's design skills aren't hype.
Begs the question though: Why not look at Ragley Bikes and the Blue Pig and mmmBop? They're the modern successors to the 456 in my opinion.