I have a Jetboil Zip (paid £59.99 for it in Decathlon - if I had known about the Go price challenge I'd have bought it from them for £54....), to which I have added the 'pot support' accessory, which means I can use other cookware/pots/pans on it as well as the 800ml cup.
There is room in the 250ml measuring cup/fluxring protector to carry a small brewkit/lighter.
The entire kit is 16cm high and 10.5cm diameter, weighing around 500gm including a 100gm gas cartridge and cutlery, and it is quite stable with the little gas canister support attached.
If I am going to cook with it other than boil/reheat then I take a lightweight kettle and frying pan/pot. It's not a perfect set-up but it's what I started with.
Starting again I might be tempted to go the alpkit route (their burners are rebranded Fire Maple items) of burner plus some titanium pieces, but titanium can be a pita to cook without burning so hard anodised aluminium is a better bet for a frying pan.
As you'll be well aware,
everything is a compromise in walking/camping - weight vs size vs cost vs utility vs enjoyment : I have more 'fun' cooking with a decent campfire, but it's not too convenient on many wildcamps or day's out, and really works best with heavier pots/pans/kettles that you don't mind burning the backside off.
When I go fishing I take a £10 calor gas stove with regular cookware: cheap, fast, stable and controllable -
http://www.gooutdoors.co.uk/campingaz-portable-gas-stove-p321994 - it's bulky but it's a 'leave it at camp' item rather than a backpacking piece.