I've been using a Toaks Ti 1100ml pot for 3 years now, mostly cooking over fire with zero problems. My father in law just gave me the 2000ml version for xmas, can't wait to get out this winter and boil up some chili.
The only downside with Ti over Aluminum or Steel, is that it takes a little longer to heat up/get a boil going on a fire, twig stove or alcohol stove (my usual cooking preferences). If you're using a high output stove like a dragonfly or whisper lite you'll still achieve a speedy boil.