Best live stream?

hello, there are sites where you can watch tvchannels live. when i stream live channels with windows media player, it breaks off all the time. i tried to use vlcmediaplayer, and insert in there the link of the stream(http:// or mms:// or something else). sometimes it works, and the live stream doesnt get interrupted, but for the important channels vlc doesnt work either.
my question is: which media player can stream live channels without breaking off? at least which is the best?