I use the Terra Weekend. I find the solo pots a bit wee for a decent meal. Having said that, for one-night jobs I usually use the dehydrated food bags. The Weekend pot is also large enough to take a standard 250ml gas cartridge. In fact, I get the gas, stove (Optimus Crux), windshield, spork, sparker and a wee sponge/scourer in mine.
The heat exchanger doesn’t affect the stability of the pan and does seem to make a bit of difference to the efficiency of the stove.
All of the below other than the hipflask, mug and pot cosy goes in the cookset.
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P1000170[/url] by ScotRoutes[/url], on Flickr