This is the first vehicle I've owned that I would consider installing wind deflectors on (except maybe a sunroof wind deflector for my 1961 VW Bug w/ ragtop sunroof). Has anyone installed these accessories on their Blazer? If so, did they make a significant difference? For the window deflectors, I'm leaning toward the EGR in-channel deflectors (IMHO in-channel deflectors look a lot cleaner than tape-on deflectors), but are all brands about the same?