The idea that vegetarians/vegans need to be "counting amino acids" is a myth - any reasonable diet containing grains and legumes will give sufficient protein. For example rice and beans, chickpeas and bread, lentils and pasta. They don't even need to be consumed at the same time, the body doesn't care as long as grains and legumes are consumed at some point. Even better if you throw in some vegetables and nuts, you've got a balanced healthy diet without needing to count anything.

First time I had quorn, I was still ate meat. It was well prepared and served with chicken sauce. I noticed the unfamiliar texture and complemented the cook that this is either incredibly tender chicken breast or most amazing tuna fish I have ever had.

As with many other frozen foods, the preparation is important. When I make quorn food myself, it's just OK, but when a good cook makes a meal, it can be amazing.

Saying that it was difficult to understand if the Quorn you ate was chicken or tuna steak makes me wonder what kind of food you were used to eat... Seriously, probably even with the mouth full of Carolina reaper I can tell the difference between tuna and chicken..