I've used Valvoline synthetic before, I'm using ATE Superblue now. Both are fine and there wasn't really any difference and there shouldn't be since both are high quality. If you're just street driving, there won't be much advantage to ATE. If you plan to go to track days or something, the ATE would be a better bet. From my understanding, the blue color is just to help with fluid changes so you know when you've flushed your system. The non blue fluid is equivalent in performance. It is pretty cool to see blue fluid coming out of the bleeder letting you know you're done though.