Regardless of which spoiler you go with, I wold personally recommend going with the Betalink. A much more permanent solution and you won't have to worry about the slight gap from using tape, someone stealing g the spoiler, or having the spoiler fly off on the highway (it happened to a forum member here. I used Betalink and couldn't be happier with the results as well as peace-of-mind about not having to worry about any of the aforementioned problems.
2011 Le Mans Blue M3// Black extended Novillo w/ Blue Grey Aluminum trim/DCT/ZTP/ZCW/ZPP/ZCP Premium Sound ///Akrapovic Evolution Exhaust
2015 Audi S4 Prestige, Brilliant Black S-tronic
2012 Le Mans Blue 135i M Pkg DCT