I’ve had my celsius boots for a few years now, fit my wide feet nicely. I tried Specialized, mavic and shimano boots at the same time but none of them worked for me.
The biggest issue is if it’s properly wet then it just runs down your legs into the tops of the boots, one particularly soggy day in Wales saw me stopping to take the boots off and tip the water out.
I tend to use nice thick merino socks with them, only really in use on the CX bike now though as I switched to flats on the MTB last summer, now use 5:10 free riders and neoprene wetsuit socks if it looks like I’ll be getting wet feet. Still get wet but stay nice and toasty with it.