Re Ironraven - Gas Cartridge
Sorry, the gas cartridge is referred to as a 100gm Cartridge not 110gm - it actually contains 97gms of 70/30 butane/propane.

Total Weight for the whole package is as follows
Mytimug - 127 gms
Optimus Stove - 87 gms
Gas Cartridge - 160 gms (contains 97gms of Fuel)
Folding Spork - 15 gms
Total Weight - 389 gms or less than 14 oz (equivalent to about 8 or 9 MRE heaters)
This setup would last about 2-3 days covering all cooking requirements and is much more flexible than MRE chemical heaters in that tea, coffee, hot chocolate and soups etc can be prepared.
Total Package size - as the cartridge and stove and spork fit into the Mytimug the package is 100mm (4') high and 90mm (3.5') in Diameter (smaller than 8 or 9 MRE heaters)
A good discussion of fuel efficiency and the pros/cons or various types of fuel is available at
http://www.bushwalking.org.au/FAQ/FAQ_Efficiency.htm