[nvilcins]

Latvian here.

You are right about the taxes in the Baltic countries - in all three you can get ~20% effective tax (minor differences between the countries). And they are really similar otherwise.

Most people in a similar situation to yours pick Estonia. It is the most focused one on tech, supporting startups, and overall the most developed one (relatively speaking). Also seems to be the most expensive of the three.

Lithuania has the most business-oriented culture in my experience. Otherwise a nice and chill place.

Latvia is maybe not the best in the above regards (though, not too far off either), but I would say it has the most stuff going on and things to do overall.