I'll start with criticism to establish veracity. As supplied, seven years ago, the Audax was too long and the contact points were unforgiving. A shorter stem, softer saddle and better bar tape solved those problems.
Since then I have averaged just under two rides a week, each of around thirty miles. Light usage for an Audax but enough to support these comments. I love the way the Audax purrs round country lanes and have found the bicycle ideal for light touring, using hostels. I am a coward on descents but the Audax behaves impeccably and has given my confidence a boost.
The narrow rims and high pressure tyres make the Audax unsuitable for the easiest of rough stuff so I considered trading my bicycle in for an XTC. I was stunned when Robin said my bicycle was still worth £450 part exchange! Thorns hold their value.
I am still riding the Audax. After a service, my bicycle goes as sweetly as ever. I'll get an XTC one day, but will be holding on to my Audax.