I’ve used the Trangia 25-7 UL/HA for a year now, and it’s as reliable as sin. Since I got it, I no longer use my MSR Whisperlite stove. This model comes with a frying pan lid (which doubles as a pot lid and serves as the top to the kit when it’s all packed up) and two pots; the pots and burner combine in a neat, self-contained package. The stove itself is basically an alcohol burner (think Sterno can) with a custom top by which you semi-regulate/extinguish the flame. The stove sits in a two-piece extremely stable wind screen (picture two pots bottom to bottom, with a hole through the middle for the stove).
The Trangia uses denatured alcohol, which is easier and quieter than white gas. Easier because you don’t have to prime the stove or pressurize the fuel canister. To start the Trangia, you set up the windscreen, put the stove in the middle, add fuel and light the top. To turn it off, you slide the lid on the custom top, cutting off the oxygen. And it’s quieter because there’s no hissing or roaring — again, think Sterno.
Another advantage the Trangia has over the MSR stove is the windscreen design, which makes a far more stable cooktop than the MSR’s three-wire tripod. As for weight, since I usually pack stove and cook pots together, the combined weight and size of my MSR and REI cook pots is about the same as the weight and size of this Trangia kit (around 2 pounds).
Negatively, you can’t regulate the Trangia’s flame very well. The Trangia is a little slower, too: it takes a few minutes longer to boil a couple of cups of water for tea. Without a stopwatch, both the Trangia and the MSR take about the same time to boil a pot of water for dehydrated dinners, always too slow for whoever isn’t cooking that night.