KTLA, channel 5, ever since Channel 11 lost the position at the corner of Colorado and Orange Grove. (They used to be proud that they showed both sides, front, back, and top of all the floats. Ever since that camera position was moved... the right-hand sides of the floats tend to be better than the left.)
Broadcast pioneer Klaus Landsberg selected KTLA's camera positions in 1948, and they are now the best. KTLA -- now part of a media conglomerate, but still keeping some of the pioneer spirit of the the station -- runs the Parade all day, from coverage staring at 6 am, to the Parade at 8 (with no interruptions, just occasional supered plugs between parade units), re-running it all day (I'm not sure if they take any of it out or not) until News@10, which just got the trendy "@" a few years ago.
Check your local listings for Bob Eubanks and Stephanie Edwards.