Not that I play the game anymore, but I always loved the Archer. There was an endless satisfaction in luring tryhards to the sewers and watching their reactions. They could literally do nothing but watch themselves die. I also loved the tension of having people chase me and having to both keep my distance and aim with flawless accuracy to maintain the gap between them. Everybody calls it a noob kit, but I think it requires more skill than any of the others if you actually want to go on killstreaks.
Wizard is very fun when the game is 96% Beast kit (i.e. all the time)