I got a Broadway Optics (slight purple tint) 270mm convex mirror way back year ago when I had my old car. When I got my Teg I couldn't believe how bad the rear visibility sucked, so I swapped the mirror over real quick. You get used to it quick. I recommend the Optics version, since you lose the flip-up ability that the stock mirror has to reduce headlight glare. The slight tint helps reduce glare at night.