what a lot of replies!
I understand that there are a great number of very good carbon frames fit for the job.
I thought the steel option was worthy of investigation despite the weight penalty but my main aim is a bike that fits properly.
Steel appealed as a number of brands offer the customisable geometry which when paired with a tapered enve fork, 44mm headtube and CK headset should make the front end nice and tight.
My build kit would consist of a Sram force group, 42mm carbon clinchers and some nice finishing kit. My alloy storck is lovely and only weighs in at 13 ish pounds but is the wrong shape for me.