When I first got back into camping I got out my gucci gear catalogue and ordered myself a shiny new Trangia 27 - 2, which was grand for campsite cooking.
Although I have always been a walker, I'd never really been that bothered about having a hot brew when just walking, until I got back into camping. The Trangia was a bit elaborate for just boiling brew water, so I got myself a hexi stove and a solo cook pot big enough to fit it in (plus solid fuel, the Trangia burner and my brew kit) But if I'm honest, I did not use it that often as it was fairly bulky and I kept forgetting to pack it in my day sack.
Campsite camping grew into sneaky wild camping and the need to have two saucepans, a frying pan and a kettle to cook with, regardless of how little space the took up when nested together, began to lessen. So I got myself a SM Trangia, which is lower spec/tech than the 27, about the same weight (perhaps a little heavier) and about the same size, if not bigger then the 27. The reason I use the SM and not the 27 on my sneaky camps now is I don't faff about as much when cooking, mainly because got into wayfarer foods and latterly ration packs and the SM is ideal for heating them up.
I've got myself a Crusader Cup for day hike brews and I use it in conjunction with either a standard hexi stove, a modified hexi that acts a stand/shied for a Trangia burner or the Crusader Cook Unit (which I am not convinced by); as it pack up fairly small and light, is grand for a brew or cup a soup and is big enough to fit a hexi and you brew gear in, but not so big it will all be rattling around as you wander.