Originally Posted by DrLewie
I have an Access roll-up tanneau cover on my '08 F250 long bed. I installed it myself and it cost about $300-$400. Works really well, but does allow a small amount of water in. It's held up pretty well too. After 7 years its starting to show some wear, but it still does its job. I haven't noticed any difference in fuel mileage with/without it in place, but it is handy to have space to carry stuff more or less securely.
We also have an Access soft tonneau cover on our '13 Silverado and had one on our '08 Sierra. Both have held up well. We have had inside-the-rail bed liners on both that helps keep the bed dry. The last Access cover came with a free fetch rod that has been invaluable.
Over the years, we have had various height shells with their advantages. However, they were a pain to take off when hauling tall items and the older we got, the more difficult to crawl around when getting to the front of the box.
The soft tonneau has been our choice for the past 8 years. DW also likes it for the convenience. As for security, they are all vulnerable to a determined thief.