My old taem used blue McMaster drive rollers for our intake this year. We tested the intake to death, trying almost every traction material and wheel we could get our hands on. At first it seemed like nothing beat orange / blue Banebots, but then when Banebots ran out of stock, we put these McMaster wheels on. These wheels work the same if not slightly better. Trust me, they're worth it. And you'll never have to replace them due to wear!
You may have seen these wheels on frisbee shooters in 2013; I think 341, 2056, 1114, 254, among others all had them. 2056 used one as a shooter wheel in 2012 as well. They're pretty nice. The only catch is you have to make a hub for them, though I've heard you can make a Vex VersaHub work in a pinch.
http://www.mcmaster.com/#drive-rollers/=y9865l
You'll want PN 2477K36. We used 60A durometer.