Recently I came across MMOKings.com after hearing good things from a friend.
I decided to order some gold for one of the users as a prize for contributing a lot the past month. Surprisingly enough the support person spoke perfect English (something I'm not used to having all past experiences with broken English tech supports).
Their fraud checking system was a bit tedious but after everything was confirmed the gold was promptly sent out to the MMOwned Prize winner. Overall their service has been a positive experience and I would recommend it to anyone looking for gold. I'll let you know if I try out their power leveling.
MMOKings.com - WoW Gold and Power Leveling Store