I know Rik doesn't like the Swiss Army Trangia, but I think its a lovely bit of kit! Bullet-proof, the lid can double as a cup, the two pans can be used as an oven, the main pan hooked over a log fire, and if you run out of meths/spirit you can use the windshield as a wood-burner. Penalty is weight, as you pay for the sturdiness there.
And I'll also second the Swiss Meta 50 cooker. Its probably the fastest meths cooker I've got if you're boiling more than 500ml and want to cook proper food rather than just boil water. I think that's down to the shape of the pans, and it also allows you to cook food (eg stew) on the bottom pan whilst also using the top pan at th same time (eg for rice or just to heat up some water). Lid makes a decent frying pan too, and the whole set is much sturdier than the Clas Ohlsen/Askalitt set.