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With a gooseneck kettle you'll have much more control over the rate you're pouring and can get a steady amount of agitation throughout the pour. Also it's much easier to make sure you're water is hitting the coffee bed evenly. It makes a big difference compared with a standard kettle.
I'm using a hario at the moment but have a Bonavita temperature variable kettle on the way, might be worth looking at that one too.
My current v60 set up is Ascaso grinder > Bosch variable temp kettle > v60.
I can brew 18g at two mins no problem.
The spout on the bosch is wide and imprecise. Are most people on here who make coffee with a v60 using one of the hario kettles and swirling it around. Does this make much a difference?
TLDR do I need a hario kettle as my kettle has a choad of a spot.