I have found TNF - VERTO S4K GTX are fantastic.
I wanted a scrambling/winter boot and these have fitted the bill nicely.
They take a C1 or C2 crampon, but are not as rigid as a Scarpa Manta Pro, for example.
Plus they are significantly lighter and far better for the longer days, especially the ''walk ins''. I generally miss one lace loop across the boot, where the ankle bends, on a long walk in and then full lace for the ascent/descent which helps.
They have only ever leaked once and on that day, anything would have let water in!! ( Except maybe Caberfeidh's waders!
)
For climbing/scrambling they are fantastic and all day comfortable. The only thing I would advise is to try on or go half a size up. Mine are a little tight, so I can't wear a liner sock or thick winter ones. But this is not a worry, as I am definitely going to get another pair, only half a size up.
The Manta Pro are more rigid and heavier. More at home on steeper climbs and long days in G12's.
They are a great all rounder, but I have found any more than 16km a day is a bit sore and a joy to remove.
Probably a ''better'' boot overall, but if walk ins are a concern, maybe something lighter and less rigid?
As for cold feet, I've never suffered with it in either boot really, but I'm not an ice climber. Long days with snow capped boots have never presented an issue though.
Obviously all our feet are different, so neither of these boots may work for you, but hopefully my 'sixpennyworth' may help.
For what it's worth my feet are fairly narrow, so Scarpa are quite a good fit for me, but not everyone.
Good luck.
Chris