I say it depends on your rear bumper. If you have an aggressive diffuser then get the performance.
Looks like your rear bumper is stock. I'd go with the M3 spoiler painted in that case. Search for pics of my car that's what I have on space gray with black wheels.
I prefer color matched spoilers on lighter cars.
Eibach Pro kit|Bilstein Sport Shocks|M3 Edition Grilles|Painted Reflectors|Matte Black Vinyl Window Trim|CF Performance Spoiler|35% Tint|19" Satin Black Avant Garde M359|Lux H8 V3|OEM Aero Lip|M3 Side Skirts|M3 Mirrors with Performance CF caps|LCI Tails|M-tech Rear|Duke Dynamics CF Performance Diffuser|Cyba 4.0 Black Chrome