Rank the following 35 artists from best to worst?

Justin Bieber, Justin Timberlake, NeYo, Chris Brown, Jason Derulo, Iyaz, Trey Songz, Jay Sean, Snoop Dogg, Usher, JayZ, Lil Wayne, Kanye West, Drake, TI, Eminem, Pitbull, Soulja Boy, Ludacris, Will I Am, Kid Cudi, Sean Kingston, T Pain, Fabulous Flo Rida, Kevin Rudolf, Akon, 50 Cent, Timbaland, Young Jeezy, Lupe Fiasco, Sean Paul, Lil Jon, Taio Cruz, B.O.B