Vibrava isn't a popular choice in any tier, period. But he's not too bad.
Vibrava w/ Choice Band
252 Attack, 4 HP, 252 Speed.
Ability - Levitate
He's on one of my new teams, and I love it!
It's basically a Flygon with Scout and Sweeper terms, only it's not a Flygon.
U-Turn is for scouting, gives nice coverage, Choice banded U-turn hits hard on the switch out.
Earthquake is STAB! Every good ground type needs Earthquake! XD
Rock Slide is my replacement for Stone Edge, which this sad little guy can't learn yet, wait until you're a Flygon buddy.... Either way, Flinching makes it pretty nice.
Outrage is high powered, STAB, and Banded, it'll do some damage.
Well, he does what Flygon does, only he's NFE. So I'm cool with him.