it has a bit of a rep on this forum as steep
I have an 09 Flux, bought late 09.
I used to monitor the Turner forums when the dw-link bikes first came out.
The only person I have ever seen with the opinion that the 09 5 spot was flawed and too steep is Hora, the serial frame changer.
I read that Turner also did quite a bit of testing on those new dw-link models to make sure they were right - I am guessing that Dave Weagle and Dave Turner know a lot more than Hora about frame design and geometry and what makes a good riding bike...
My Flux slackened off an appreciable amount when I changed from 100mm to 120mm forks.
One of the probably reasons it became slacker in 11 is that it was too close to the flux, especially when they started fitting the flux with 120mm forks. And fashion.
Some of the 09 Fluxes cracked as well. Greg reckoned it was mostly people sitting down whilst riding the rough stuff, but if I send my frame to them they will make the changes to the later, non-cracking, version free of charge other than my shipment to them. Not sure what the charges would be on a 2nd hand frame though.