Only two problems with the 123 , 8 and 96 - they use petrol, which you say you want to get away from, and they're relatively small. (I also find the 123 a bit wobbly, being narrow and tall) Combine the 123 with a purpose-designed cookset however, and it's much better! Now all I have to do is remember the name of the cooksets - I'm sure Rik will remind me!
Ah thanks for that, didn't know they were petrol stoves, was under the impression they ran on other fuels.
For a big heavy duty stove I have my No12 up and running but not one to be carried far.