Personally I use RAW Kingsize Supreme... they burn slower than most papers and have zero chemicals added. Bob Marley is just a name to sell, even if they are hemp. They're a fucking gimmick.
Here's a cool vid showing how clean various brands of papers burn. At the end he burns a blunt wrap just to show you the shit you put in your lungs:
[video=youtube;7OpSGHV2leI]http://www.youtube.com/watch?v=7OpSGHV2leI&feature=player_detailpage[/video]