Wheel styles are very subjective. You can never go wrong with a traditional 5 spoke, but to me, the aggressive styling of the G8X platform calls for more aggressive wheels. I think this is the reason the 826M stock wheels look great and simply need spacers and a drop to look good.
I have personally opted for set of ANRKY S1-X1's. Brushed clear face with gunmetal tumble windows. Placed the order and am waiting another 3-4 months - which is fine since I won't have my M3 until then either. I'm debating on the 3 piece S3-X1 but we'll see