Gah, I'm getting really undecided here:
Primus OmniLite Ti - includes mini fuel bottle, metal pump, 12 oz (341 g) with pump, can use canisters, auto gas (petrol), kerosene, diesel, butane/canister, jet fuel
Primus OmniFuel - higher heat output than OmniLite, does not include fuel bottle, 15.6 oz (441 g) with pump, can use canisters, auto gas (petrol), kerosene, diesel
MSR WhisperLite International - packed weight 15.6 oz (441 g), auto gas (petrol), kerosene, jet fuel, diesel
Optimus Nova + - 15 oz (431 g), kerosene, diesel fuel, jet (aviation) fuel, Optimus Arctic Fuel, and others
MSR DragonFly - stove + pump - 13.8 oz (395g), kerosene, diesel, naphtha, aviation (AV) gas, stoddard solvent, auto gas (petrol)
MSR WhisperLite Universal - minimum weight - stove, fuel pump, all adaptors and jets - 13.7 oz (388 g), canister fuel, white gas, kerosene, and unleaded auto fuel
I am so confused...