Ritchey WCS is a pretty easy to use, easy on the eyes seatpost. Alloy model weighs 225 grams and can be had for $50ish, carbon weighs 185 grams and can be had for $150.
Theres also models from Zipp, 3T Dorico and Palladio, Deda, etc.
But in the end you can pay a lot for not much improvement over a WCS alloy post.