I am a guy who wore Russels for 25 years (both custom and off the shelf) and ran away from them as soon as I bought my first pair or Courteneys (Selous). Some of you Russel fans missed a real deal at the local Goodwill about ten years ago.
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I now own I think five or six different pair to include Courteney's new paddock boot for around the ranch. Unlike Russells which can take months and lots of miles to break-in (at least for me), Courteney's fit perfectly from day one. I have never had a blister.
Courteney is not a mountain boot. For those conditions I wear Kenetrek.