In reply to ice.solo:
Just to say I am now the proud owner of a Mountain Hardware South Col
Looked at the POD and Macpac and the Macpac was a close contender (sorry, wasn't so keen on the pod myself but see why it's a favourite). Before I got to take my kit back to load the macpac I found the South Col for £120. It fits perfectly and is that combination of simple (to look at) but functional when you start to find all of the features.
Yet to try it out in the hills but hoefully it proves worthy of my money. I haven't added anything or cut anything off yet, so that's a good start
Thanks for the help all, it helped to read some specs before I got to the shops with my shortlist.