In reply to Climber_Bill:
I have Cubes. I find them excellent, although I am a newbie and they are my first pair of winter boots.
Had some faffing with sizing - started with a 45 after shop assistant encouraged me to size up for mountain boots (normally a 43). That didn't really work out for me, so I ended up trying very many boots (more than a dozen, multiple sizes of multiple brands and models) before settling on Cubes again in 43.5.
Subsequently wore them for a couple of weeks in the Alps in September and they have been excellent - pretty light, comfortable, and lock to the foot nicely. Warm enough, though I never ended up standing around anywhere very cold whilst I was there. They also feel pretty nimble, which is a big plus given that they are still relatively big boots.
I did try Zamberlans, the Mountain Pro 2090 and the Eiger 4000. Had to buy them direct from Italy though, so potentially hard to try on in the UK. They seem top notch but the shape wasn't quite right for my feet. Sent them back.
Also tried Scarpa Mont Blanc GTX and Aku Montagnard (can get from Keswick Boot Co) - quality seems excellent, but again shape wasn't quite right. Sent them back.
I do have fussy feet, so in the end getting a good fit trumped everything else for me.
Edit: I never tried Nepal Evos, but I have read in a few places that the fit is somewhat different between Evos and Cubes. So worth keeping that in mind.
All that said, if you happen to be after a size 45 in Cubes that are nearly new (worn for a week in Scotland, didn't get thrashed), then let me know...
Post edited at 00:40