Choosing a cooking system is different for everyone based on their specific needs and preferences. If you want the lightest option possible, you're going to sacrifice a reduced boil time. If, on the other hand, you want the fastest boil time you can get, it'll weigh a bit more, but you'll have boiling water in no time.
Some backpackers prefer to have a teeny tiny cook set, some prefer to actually cook food (which means you need a simmer option, while others like me, just like to boil water for rehydrating meals.
There's no right or wrong way to go about it. It's just a matter of what you're looking for in a cook system. Do you want to use various pots? Do you want wind protection? Do you want to have the ability to boil snow? Do you only care about boiling water?