After lots of frustration trying to use narrow pots (snow peak 450/600/firelite500 etc) with alcohol stoves, I've reverted to an old standby: The Evernew 0.9L Pot. It's only disadvantage is the larger size/packability, but weight wise it's extremely light, especially considering it's capacity. My pot with the handles removed and without the lid weights 2.1 oz. That's lighter than a SP600 with the handles removed. Add a pie tin foil lid and the complete setup is only 2.2 oz. That's the same weight as my firelite 500, and the larger size and capacity is much easier to deal with. If you use the stock lid, it's still only 3.3 oz (handles removed).
Additionally, I have been consistently getting full rolling boils with 20 ml of alcohol, (something I've never achived with narrow pots-excpet with the caldera cone) which actually weighs under 0.5 oz, so lighter than ESBIT (which I am a big fan of).