Hi, After owning my M3 for a few months I want to add a tint. Tint will include a clear front and tints on the sides and roof. After doing a lot of research I have settled on a Ceramic tint due to the heat rejection and non interference with radio waves. I originally thought that the 3M Crystalline was the best. However Stek Nex now has a similar product at about the same cost. I cannot figure out which one is better. Does anyone know if they are about the same or if the Stek is superior to 3M or vice versa? Thanks.