Terra was 2nd on my list as I ended up with Hankook Dynapro ATM tires. I did a lot of research on tires as I live in the snowbelt (120+ inch) Buffalo,NY. Check out some reviews of Hankook Dynapro ATM. In my opinion the Terra's didn't look to have the sipes to be a very good tire in the snow.
I had terra grapplers. Pretty good tire. I don't have any complaints. I never had any issues in the snow or heavy rain(of course I don't drive like I stole the truck in bad weather either). I just recently had to get new tires(general grabbers this time). Terra Grapplers lasted me about 4 years.