I have used hexamine/esbit quite a lot, the esbit stove is smaller than the hexy one, I also have the Czech army version which is very slightly smaller than the esbit, of the three I prefer the esbit stove and fuel (it seems to burn a little hotter and cleaner than hexy but that may just be my biased feeling). I am happy to use these stoves throughout the year for brews on day hikes or overnighters, I will use them for trips of up to three days during spring/summer when cooking simple quick foods and brews, for longer trips and when cooking more substantial food I use a gas cartridge or sometimes an msr stove. Hexy blackens the bottom of your pot but that doesnt bother me in the slightest (so does a woodfire which I often use, just stick it in its own little bag to stop it soiling other items in rucksack), some say it smells but that doesnt bother me either as I cant say Ive smelt anything unpleasant (and I have a very large hooter

). A windshield round the stove is essential to get the best efficiency (make one from a £1 aluminium foil tray from poundshop). You can light hexy fuel blocks with a ferro rod, just scrape the block to get some powder then throw a spark on the powder and it will ignite (so carrying a hexy block, ferro rod & knife you are always able to make fire). Esbit fuel blocks are smaller than hexy blocks, one esbit block (from the six block pack) will just boil a 300ml cup of water, equally one half of a full hexy block will just about do the same. When using a full block of hexy if you break it up into halfs or quarters it will provide more heat output than just lighting a full unbroken block. One full pack of 8 hexy blocks weighs approx 250g, one full pack of 6 esbit blocks weighs approx 105g, one full 230g gas cartridge weighs approx 400g, so depending on your own use you can estimate which would be lightest in use over a set period (weights are fuel only, stoves not included) In the 6 block pack of esbit each block is individually wrapped, the hexy blocks are not individually wrapped. Compared to other fuels I would not consider it a cheap fuel, I would consider it a lightweight option for short periods only of 3 days or less, longer periods the gas wins on that (a gas cartridge can last me 1 week). They are very good for having brews on day hikes and I often take one in preference to a flask. Hexy can be stored forever which is useful. A pack of esbit fuel will fit inside the esbit stove exactly the same as a pack of hexy fits into a hexy stove (in reference to spandits comment post number 13). The firelighters found in poundshops are completely different to hexamine, they do not burn as hot as hexy, the flame is less intense and inefficient, and they leave a great deal more soot and gunge on your pot, compared to hexy they are rubbish (in reference to scot charles river comment post number 7) Try one in the field and let us know your opinion.