In reply to Mitchiethekid:
My wife and I both used Charmoz OD's for trekking and La Sportiva G2 SM's for Mera and Island Peaks. No problems with cold feet and although the Charmoz OD's may have been overkill for the trek they were extremely comfortable straight out of the box.
We purchased her Charmoz OD's at Decathlon as they were around £40 less than I paid.