I had sliders, adn hated them because of the noise. Just bought the Fiberglass door uppers with sliders. baiscly they make the door into a solid ridgid door. I LOVE THEM. the two things I dont like is the windows dont open that far, And the Company that I bought them from Sucks!!! 4wheel parts LIES about price matching, There Customer Service Sucks. And they are not accurate in pricing in there catalogs. They advertise one price then clame its a miss print, but the next catilog they send its still listed at the "miss print" price. Sound like a Bate and Swap to me. BE CAREFULL where you buy your supplies.
Good Luck