advice for a good PVP pet battle server?

[Tekulve2012]

Looking to make a DKnight on a good pvp server ...wondering if any of you find the competition plentiful
and fun on a certain server... I thought I might go with Horde Madoran to have the WCPets guild as an option.

I presume AH prices and variety there might also be solid due to a greater # of pet enthousiasts

thanks for any help