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Can't really go wrong with an MSR pocket rocket, small and light enough, very reliable, just make sure you can recycle the empty canisters somewhere local (guide to disposal). Easy enough to pick up 2nd hand cheap too. Quicker than meths burners if that's important.
DIY meths can stoves are the cheapest option unless you pick mad expensive beer.
Plenty of info/comparisons here if you want to nerd out https://adventuresinstoving.blogspot.com/
Not flying anywhere. Will be bikepacking in the UK