Pokemon Black team opinions?

Well my 6th was a Swanna that knew surf and fly, it actually wasnt that bad. But i replaced it with Reshiram in the end. Remember it asks you if you want to switch out your pokemon when you catch it so you can go through the elite 4 with a full team. I found my Krookodile very useful against the elite 4. I had an Eelecktross which was very useful as well, along with my Gigalith. Youre covering alot of types, though many of them are single typed. I do recommend Eelecktross, no weaknesses is very useful and it could learn may types of moves. Reshiram is very useful in the final battles. My current most powerful is a Tyranitar which i transferred as a Larvitar from HeartGold, though you don't have that option yet. The elite 4 is tough, just be sure to pack many revives and potions. Other than that, good luck, i found the elite 4 tougher than N and Ghetis actually because you are healed inbetween those battles