Whenever I have bought riding boots in the past I have always gone for quality and fit for purpose, generally ending up with the not-the-cheapest. And actually as I only wear my riding boots to ride - not to do farm chores, or walking, or living... I find that they do last a long time!
I see that I omitted to say that I ride English, so I do need boots that fit in the stirrups. I have some wonderful Sorel boots (can't remember the model) for outside chores. They look like Giant Boots, and they keep my feet toasty - but fit in a stirrup they would not!
For those that recommended foot warmers, I've tried them. We have a cupboard full - but in this climate I need the boots to be keeping my feet warm too; if they're not up to the job then the poor little foot warmers don't stand a chance!
Thank you for all your opinions - I go to Greenhawk in Edmonton to give them lots of my money. I shall update you tomorrow evening