The Dayan ZhanChi stickerless is the best in this vote, the Rubik's brand cube are well known to be garbage and overpriced. Shame there are no Moyu cubes in this vote.
I hope you're joking, because that's clearly a Moyu Aolong (a top choice among speedcubers), not a stock Rubik's brand cube (acceptable only if you've never heard of speedcubing)
Yay! Rubik's cubes are awesome. I have several 3x3x3 ones, and one 5x5x5 that a friend ruined by peeling off the colored stickers. I would love to try my hands on the even sided cubes.