Which winter shoes / boots are people using?

they look overkill for the u.k.
been using shimano mw-80's with no problems including belo zero 4hr mtb rides where water vapour freezes in your beard.
i bought a size up thinking 2 pairs of socks would be the way to go but they were too warm so now have my 'normal' size and just use a merino sock with them.

Anyone else got any views on these, or know if any proper shops stock them? I can't really stretch to the £150 lake ones, and the reviews on these seem good.