I like Demonology, it has a nice flow and doesn’t feel entirely rooted to the ground as i tend to hate in ranged dps. It’s also fairly tanky.
But whatever race i enjoy most as a warlock tends to be in flux. Nightborne are cool, but the lack of customization really gets at me sometimes. I generally like blood elves, but i struggle to find a transmog that really gels with a blood elf that i could easily earn.