If you are west coast either Illidan (PVE) or Tichondrius (PVP) are likely your best bets.
I was on Tich for a long time but I’m East Coast so I just moved to Area 52.
*While no server is strictly pve or pvp anymore. Tich was a PVP server before warmode so it still has it’s roots in PVP moreso then PVE.