I think the NXT Tour and the Bridgestone e series balls are a little bit better.
In what department? NXT Tours being a touch spinnier I would imagine, but $4-6 more expensive, and less durable. The E6 being straighter, but with less spin on approach for the same price as the Q star.
I only like the E6 off the driver, where the Q-star and NXT tour feel good off of all the clubs