I have owned a numer of diferent boots, Got the G4's this year, wore them steady for 4 days, hiking and wading. Very comfortable, lots of support, lots of grip walking up grassy slopes or moss coverd rocks.
If you can afford them, get them.
it is like a fly rod, good rods cast well, good boots feel good.
At the end of the day, I don't wish to strugle to take my boots off, or to feel real good to have them off. With these simms, I'll leave them on and drive home. They feel that comfortable.
It is like there vests, they fit well, and do not give me sore spots, from rubbing. The only complaint I have is I carry to much in all those 22 pockets.
I have never regretted buying Simms