I think it's the best evil organization out of all the ones that exist in Pokémon. Sure, it might draw with Team Galactic and Flare, but still, i think they're the best. Their B/W outfits were pretty goofy, but their BW2 outfits were awesome. The battle theme was great on both versions, but i really think they had a better appearance in BW2, with the Frigate, Kyurem and Colress, and the second fight with Ghetsis. Their B/W appearance was great also. The castle rising up from the ground, the fight with N and Ghetsis, both were hard(especially Ghetsis) made it my favorite evil team in Pokémon.
The one thing i cast out are the Seven Sages. The only sage that actually does SOMETHING is Ghetsis, meanwhile the other six only play a major role in the post/game of B/W, when you track them down to help Looker. But the one i liked the most was Rood. He was really nice, despite his... name.