When backpacking with my wife, I use an MSR Whisperlite International or Universal or something like that (the one that burns a variety of stuff). It is far from ultralight, but I greatly prefer a liquid fuel stove to a canister stove. With a canister stove, I never got to where I could tell how much fuel was in it, so if we were out for more than an overnighter, I always brought an extra canister, which was wasted weight. With a liquid fuel stove, I can measure out my fuel based on the number of boils I’ll need for the amount of food and water we’re bringing. I like that flexibility. The only thing I don’t like about the Whisperlite is that it doesn’t pack down very small, and it’s an awkward shape. I always just end up shoving it in my pack in its stuff sack, so there’s really no protection for it or anything. Knock on wood, no problems yet.
By myself, I usually use a homemade alcohol stove. I know those aren’t very popular on this forum, but I love the simplicity. I’ve seen all the charts that show how after a certain number of days the alcohol stoves actually weigh more than a canister stove because of the fuel weight and consumption, but I still prefer them because I can measure out my fuel and know exactly how much I have left, etc. I nest the whole stove with a mini Bic in a sandwich bag inside my Snowpeak pot set with a ti spork and a piece of Brillo pad. For my needs, I’ve found this to be pretty much the perfect cook kit. I’ve never had to boil snow for water or anything like that, so I know this doesn’t work for everyone, but you ought to at least give it a try.