Truck Forums - RETRACTABLE/FOLDING HARD TONNEAU??

Im about to buy a bed cover for my truck and it needs to be secure, watertight, durable, and versatile enough for me to still haul large items without removing the cover. I like the Retrax, Rollbak, and Flipbak covers but I have heard negative things about all of them so I am hesitant to buy anything at all. Have any of you guys had experiences with bed covers? Which would you recommend? Any help would be appreciated. Thanks. (Also, dont buy Peragon, I heard they are a total waste of money)