Pros and Cons of each one:
Mind reading would be useful to see what everyone is thinking, like when you're listening to the straight A student takes a test and he says the answers in his head. The only problem I see with this though is that you could also hear your friends thinking bad things about you when you did something, or there would be no way to shut it off, it just sounds like a lunch cafeteria only 10 times worse.
Infinite strength, I could see this being useful in fights or wrestling matches, as well as doing some heavy construction. Only issue is that if it's infinite, then we're talking Shaggy's level strength, and the problem with Shaggy's level of strength is that we wouldn't be able to control it.
Gun hands. I saw the comment about the ammunition, but even then there comes the issue of getting through security with them, and then accidentally shooting your friend in the knee. I don't see any pros for this one.
Truck.
This is just Transformers, you don't need a car or a driver's license, you can just be truck. The only issue? You'd be a smol truck.