What is the most fun class in wow preferably a blood elf class but any will do cheers?

Honestly it's all going to depend on how much you feel like doing and how quick you pick up the characters abilities. My first character was a Hunter. I've played all of them though. My favorite would be Rogues. I also have a Warrior and a Druid.
The Rogue and Druid are most fun but Blood Elves can't be Druids.
I say make a few different classes from your Blood Elf and see which work best for you. You may enjoy one classes playing style much more as I did. After getting to 70 on the Hunter and then starting a Rogue. I was wishing I hadn't done so much time on the Hunter lol.
Good Luck ;)