I'm not exactly sure what a mess tin is, but some folks I've camped with have had problems with so-called lightweight camping
fry pans that can't tolerate heat; they end up all warped and useless. We use a thick bottomed stainless steel pan--lighter to carry
than cast iron, but heavier than the crappy sheet metal gadgets. The extra few ounces is worth it.
Six of us spent a week in the backcountry last year using only the 3 items for cooking...not too much weight per person..