I got choo
I'm confused now... Can you twink at level 20 on a free account? and will pre-made heirlooms on them work? I thought we could twink at 19 on a free account.
Yes, you can twink at 20 for free. However, when you cancel your sub you're going to have to turn XP back on before it runs out. When the sub is cancelled, you'll no longer gain XP. You'll be what Blizzard (and most folks around here) refer to as a "veteran account". (and yes, you can still use heirlooms, though they are rarely BiS)
So level a 20. Gear it, enchant it, stock up on consumables and then cancel your sub. Enjoy free pvp.
20 with xp unlocked can play once the sub runs out, they're known as veteran account players.
Something about banking XP tho so those toons will level once you sub again, or something. Look into it a little...
Luckily for OP, banking XP only applies to starter accounts (IE, have never had game time) and not to Vet accounts. Veteran accounts can unsub and resub all they want.
There's some weird things to know, like professions will lock at 100 (75 sometimes) for vets though you can still wear gear (like goggles) that requires a higher value. Once your sub is over, you cant put high level enchants on your gear (so enchant BEFORE you cancel) and other stuff.
Feel free to head over to the Veteran sub forum (under the 20-29s main forums) and poke around there. Those guys are more than happy to help you navigate going vet.
Its a blast! Cant wait to see you in game.
Edit: oh, and if youre looking for the most broken classes, thats open to some debate but I'd recommend rolling a druid, a shaman, a hunter and a priest.
Druids because balance is hella busted and resto is just super fun.
Resto shaman are strong as HELL
Survival and Marks hunters are just stupid strong, offer lots of utility and vastly different playstyles, should you get bored.
And priests can do bang up jobs as both disc and shadow.
And also because all these classes are bound to be strong in future expacs and patches. So you wont have to worry about building an awesome twink that youll have to shelve in a year *cough*everyarcanemageinthebracket*cough*