My personal experience is limited, but I have a Grohe thermostatic valve and like it. It's about 7-years old now and works fine. Looks good. I decided to go with it after using one in a hotel in London. The pressure was varying all over the place, and the thing kept the temp consistent from the first day of our stay to the last, and with the varying pressure (a pressure balance valve should keep the temp close under those circumstances, but not the day to day temp setting, or if the supply temp varies). I did need a new vanity faucet cartridge, but they sent one free in a couple of days. You may need to wait longer in Fairbanks, but the things don't catastrophically fail, you have some warning you may need a new part and have some time.