I want to tell you which is best. Honestly I do but it would be cruel and wrong for me to do so. I'll tell you where not to buy shoes from. Discount sports stores and supermarkets sell horrible walking boots. The price may look good, but you will soon regret it. Get to a good outfitter selling walking boots/trainers and get a professional fitting. Failing that, buy a load of shoes online and see what feels good.