This one is "new for me" (new stove day again!) since it appears to be a return that was fired briefly before it was returned which allowed me to get it at significant discount. There was another topic (from a search) on it but the photos were all removed. It has a lot of control for the gas valve. It isn't like the relatively insensitive single valve designs where around a quarter or half twist from the closed position it goes to 100%. From what I can tell there is around 450 degrees of rotation to it. The first 1/8 or so of rotation from the closed position is needed to initially open up the valve enough to even light it off. There is plenty of control when using it as a gas feed to the point that it can be brought down to a stupid low simmer where the flame "dances" on the burner head and pufts at a high frequency. On canister inversion the stove surges a bit so turning it down to a simmer is a good idea. The fuel line is stiffer than on my Primus Omnilite Ti and definitely in comparison to the Sotos Stormbreaker and Muka that I have. I would put it as being less stiff than a MSR Whisperlite Universal but a bit stiff than the Simmerlite. The fuel line does not spin at the stove end, only on the valve end which makes it kind of a pain to manage. Caveat: My flame shots are done with pure butane, which has a lot less pressure at room temperature. The Vega likely has much more output with isobutane mixes due to the increased pressure.