My 2cents... I drive an '85 Suburban 4x4. Lund visor, no wind noise, no
vibration, no birds(a few dragon flies though). The only adverse effect I
have encountered is with my Rain-X treated windshield. Rain doesnt blow off
like it used to before I installed the visor. So the air flow across the
windshield is slowed substantially. I do like that the wipers dont 'lift'
like they used to on really windy rainy days...
As far as looks, I love it, as for drilling the roof, I dont like it. It
adds a little shade to the inside, keeps a little of the snow off the
windshield when it sits durring snow fall here in Iowa. I definatly dont
like that I gotta remove it to replace my windshield since it became
cracked, but as with almost everything, there will be trade offs.
Like I said, my 2cents...