I like my primus micron (old design) with PZ ignition. Also my new Whitebox stove. Thee WBS is made from Aluminium beer bottles that only recently reached shops here. It has side jets and is slightly pressurised. The jets are quite powerful and it is efficient. It comes iwth a base plate and windshield made up of a verylight foil. It boils water very quickly for meths. About 5-6mins from cold water to rolling boil (temp dependant). That is not far off some gas stoves.