Q45 brakes, 300zx brakes, 180sx brakes, and the Wilwoods all have the same stopping power in my opinion. In the end, it’s all about which one can handle the most heat when you really start to push it.
I think that the 300zx brakes would last slightly longer over the Q45s before the fluid boils. Most people just get 300zx brakes for the look in my opinion.