I've got the Post Office one. They're about the same. The PO card has a better APR on cash withdrawals if you use that facility. Log onto their website with leaflet code '0072273' to make sure you get the offer with 0%. Abbey have started doing one as well but it has restrictions on it. A thread on here the other day was saying how some customers were having a few minor problems with Nationwide if you use your card more that so many times a day it was refering/declining.