New Skateboard Trucks?

What new trucks should i get, right now i got independent stage 9 trucks, and i just think that there's better trucks for tricks and grinding. i was thinking either indy's stage 10, thunders, tensors, or ventures. i'm looking for something that is not heavy (the stage 9's aren't that heavy to me, but i would like something bit lighter), last a good amount of time, and that grinds pretty well (i don't grind, but i'll learn.)