I would have to say crowntail and halfmoon, I love them both equally.
My first ever fish when I was 7 years old was a solid black Crowntail/Halfmoon male called Wolf's Tooth. He was my uncle's fish until he moved into an apartment and couldn't keep the fish anymore.
He was beautiful. He had the crowntail edges but the width of a Halfmoon. He was purebred and cost my uncle $232.
He was amazing. Even when I used to scoop him out of his tank with my hands [now I know better] and accidentally drop him on the floor, he'd keep on ticking.