Man, alcohol stoves are a joke. They are for hobos and emergencies, mostly. I purchased a Vargo titanium alcohol stove from this site and while it works, it is hardly what Id call the ideal stove for any kind of serious backpacking. I tried all three kinds of alcohol in it 1) denatured alcohol from the paint supply store 2) 90% rubbing alcohol from the drug store and 3) Everclear (moonshine) from the ABC store. Everyclear by far burned the best, it burned the cleanest with no noxious fumes. Rubbing alcohol works poorly, it snuffs out easily and blackens your pot. I wouldnt recommend rubbing alcohol except in an emergency.
I tried the above alcohol in 1) a Vargo titanium stove I bought from BPL 2) a simple steel cat food can and 3) a “supercat” alcohol stove I made from a steel cat food can, by drilling I believe it was, 14 holes in the can.
The supercat was the most impressive, but wasnt impressive enough for me to want to take it on a trip.
Alcohol stoves are just too iffy for real backpacking. I own a Jetboil PCS myself and I actually like it. It boils 2 cups of water the fastest of any stove Ive ever used. There are lighter weight titanium cartridge stoves on the market…Vargo makes one…perhaps you should consider selling the Jetboil and using the money to purchase a lightweight titanium cartridge stove (Vargo or otherwise).
Ive never used this Esbit stove, but I am going to REI TODAY to buy one and try it. It sounds pretty good reading some of the reviews here. Ive used military issue solid fuel stoves in the past for backpacking and wasnt impressed in the least. It wont boil water, it will just heat it up to the edge of the boil point. Military issue solid fuel stoves are what I think of when I think of an Esbit stove, but evidently I am wrong.
Chris Townsend in his book “The Backpacker’s Handbook” gives solid fuel stoves a bad review for any sort of serious backpacking. That guy has done a huge amount of thru hiking and has very credible credentials. He says Esbit wont boil water and if you can get it to boil, it takes forever to boil. But I’m going to go and (probably) end up wasting a little of my money and buy an Esbit and see for myself.
Another thing you can do is buy the Vargo titanium alcohol stove and flip it over and place an Esbit tablet on the flat side of the stove. Thats extremely ultra-light, although I am unsure if it would really work well for actually boiling water.
If you dont want to sit and wait and wait and wait and wait for that water to boil, the odds are you will need a lightweight cartridge stove.
Vlad