Need a little assistance regarding realms...

Hi,

I'm somewhat new to the game. I've played before a little bit, but that was back during Wrath of the Lich King and Cataclysm. So, most of the game is new to me. Right now, I'm having trouble deciding a realm.

I'm going to play a Human DPS character- Rogue or Warrior, and I'll focus on casually exploring, leveling, questing, gathering achievements, and doing PvP. Not that into hardcore raiding at endgame, so I don't think time zone would be a big factor. (I'm using the NA client.) I'm looking for a PvP or RPPvP server, hopefully one with mature, nice, and helpful people, but I'm having trouble deciding which one to pick.

I've tried looking for guides, but most of them seem to have been created before the cross-realm stuff happened, so I'm not sure how relevant they'd be.

I've been wanting to play WoW for a long time, and I can't wait to jump in. Any help in this matter would be really appreciated.

Thanks.