Hi, and welcome to the board. It all depends on how much you are willing to spend and do you want the player primarily for music or videos or both?
I can recommend from personal experience the Meizu M6. It is a great player that has excellent sound and video quality. I purchased mine from JTC Electronics found here:
http://www.jtcelectronics.biz/
House of DAP
http://www.houseofdap.com/ is another seller. So is MP4Nation
http://www.mp4nation.net/catalog/
Telcast players are also pretty popular and can be found at these stores.