How about USE Alien or Sumo, they make brilliant seat posts and have done for years.
The Sumo post is lighter and nicer looking (in my opinion) than the Eternity.
I’ve had USE posts since the mid 90’s and always found them great plus their customer service is as good as Hopes in my experience.
Second this, got two Sumos , carbon and alu, both are beautifully made and look incredible, the clamp is extremely efficient as well (single bolt design). Additionally, UK based office (and by office I mean about 2 different people pick up the phone) means great customer service.