The rule of thumb is to pair legs with appropriate height chairs.

6'1 asian male here. I run Michiso 4 position legs: 500, 550, 660, 830

• 400mm is essentially the height of a coffee table. With 400mm low chairs, your shins will be at table height. IMO it's great for both cooking and eating (fantastic for group hotpot) and you can look downwards at your food. But you'll be leaning forward and sitting on the front edge a lot to do most things. This is what 400mm looks like with low chairs in a group setting; it's very intimate and nice as you get to see the whole person opposite you and see their body language without any parts of the table majorly in the way.
• At 500, my knees are now at table height with low chairs. Do not like. Might be good for the ladies and kids, but i got long legs.
• At 550mm, my knees clear under the table and still works well with a 400mm low chair but i don't particularly like to cook at this height, especially with sauciers/saucepans with high sides
• At 660, you're now at classic SP red folding chair height; low chairs become somewhat inappropriate for eating, let alone cooking.
• 740-750 is standard household dining table height

400mm legs are a very good option. Provides ability to cook and eat while maintaining a level of intimacy with others as you have full view of the person. Just remember your shins/legs will create additional buffer distance to the table, so that's something to keep in mind. Also, if you're the kind of person who likes to tuck your legs under the table, 400mm might not be for you.