Probably spriest is the worst IMO. Too little mobility and too much casting that it feels really frustrating when you lose and it often feels like it’s something out of your control OR because you played bad and got kicked like a soccer ball.
Compared to something like mage or shaman where when I lose I feel like there’s ALWAYS a million things I could’ve done better because there are SO many tools in the toolkit.
The most fun IMO is probably ret because you have infinite utility and range and solid damage and you’re just a really really good support class.