In reply to anthonylewis:
Don't like the pocket rocket much - heat is concentrated on a smaller spot than most, which means if you are doing anything other than boiling water you will burn stuff.
These days I use a primus express - a few grams more (difference vanishes when you factor in plastic PR case) but better heat distribution.
Having said all that, I think all small screw on gas canister stoves are a bit crap.
[edit] I just read the bit about the only interest being in boiling water, in which case any of them.
Post edited at 10:40