What new frame? <£1K

Hello,

apologies for the highly orginal and creative(!) first thread but i am looking for a new frame and dont really know where to begin.
- Budget is £1K
- I weigh 82 kgs though hope to get down to 75 by spring 2012
- I mostly ride sportives and the occasional duathlon with 10-30 mile bike legs
- I will be using 50mm Gigantex carbon clinchers from Wheelsmith or Fulrcum Racing 5s

Things I am considering;
Cervelo S1 (best all rounder? but top of budget)
Ribble Stealth (seems to be a great frame from the reviews)
Enigma Eclipse/Van Nicholas Euros (i know its over budget but as a bike for life Ti does appeal)
Ridley Icarus
Planet X

what else should i look at? as you can see, frame material isnt an issue really, possibly it should be but I want a good all rounder and at the level of riding I do, worrying about marginal losses through flex or not having the bling factor isnt a concern.

I dont mind leftfield suggestions but value for money is principle so things like Condor are probably out. yes I know I can get a great deal second hand but I'm not in a position to be now so its really a case of whats around when i pull the trigger. I'll look in hte usual s/h classifieds but probably go for something new.

vmt,
CCDC