Anyone with a team of warlocks and hunters and druids

I realise this question gets asked a lot and its not the most logical question in the world but for once I am actually stuck.

Little background - I run a priest/4 mage team and I run a 5 rogue team. I spend most of the time either ganking or doing old school raids with friends so its all good. I don't raid and I don't arena cause neither are fun, so I'm left doing everything else which I consider fun :) Now I'll be starting five new raffed accounts to level a new team, it may very well seem insane but I kinda enjoy leveling certain teams (my rogues were extremely fun to level) anyway onto the main question. Of all you people who have a group of each of the classes listed (I guess even if you have just one or two of the groups listed) which is the most fun to you?

My problem is they all seem to have a lot of 'fun' stored in them just waiting to be unleashed but as much as I like leveling I'm likely to only level one team, so I wan't to level the team I'll have most fun with. read: Five felguards mashing face/five aoe shadowbolting demons/five druids making people invincible with hots etc

Anyway if you have any comments suggestions or you just want to kick me in the teeth and tell me to use my brain and decide for myself (not a bad idea no? ;)

I'm open to anything

Edit: I don't do dungeons either so it doesnt have to be on of those conventional you needa healer with the locks/hunters or go tank/healer/dps teams :)

After playing boomkin for a little while, I think they seem better that the lock I
used for raiding. and with dual spec possibilities, droods are now the masters of all things

Boom it, heal it or tank it.

I did really enjoy leveling my hunter, because I liked having my voidwalker for so long and having a gorilla was the same, but cooler animations.

Have fun

Sadly I don't have any of those teams, but I think you wouldn't go far wrong with any of them. (that doesn't help you much).

Personally I think druids have it all, and would be the most flexible group should you change your mind about what you want to do months down the line.
It's the group I would roll if I could be bothered levelling anything else up.

Stealth - sneak attacks even if you are a caster, self healing, battle res, normal ressurection, Roots. If you are bored of being a caster regear and become melee
and I know you don't want a trinity group but you could change it in to one if someone puts a gun to your head.