Lots of regular travelers on here, so might I ask who recommends what, and at what cost?
I did mine via http://www.moneysavingexpert.com and ended up with 'one'.
I can't remember exactly how much I got it for - it was around the £40 - £50 mark, was for my wife and I, and worldwide but not with the winter sports extra.
Edit: Just checked - I got it for less than I thought! £38.43