In reply to abcdef:
My personal opinion is to not bother with non-stick coatings. Stainless is far more reliable and robust.
I take it you're not looking for lightweight if you're wanting a kettle. If it's for car camping stainless would probably be your best long term solution. If it's more for base camp use then someone else may have some good ideas!
You mentioned pans being held snugly to avoid movement. I use a small bar towel as a tea towel if I'm not too bothered about weight, which fits between the inner and outer two pans to prevent noise by taking up all the space. When I lose that I'll be using some microfibre/travel towel material instead.