Gates is good too. I compared a conti-tech belt and a Gates side by side for my first belt change. The conti-tech was superior in workmanship and overall quality. Seriously. It was made with thicker, more and supple, and none of the metal core was showing.
The Gates was thinner, and has the metal core exposed. So I saved it for the next change. Maybe even the last one if I still have the car near the 200km mark.