Great name. We shot a video about 5 months ago(it is our most viewed video during that time period of the 100's we have) on the Bakflip
differences. Check out this Bakflip Tonneau Cover Comparison
. Let me know what you think and I can answer any questions.
We also have a comparison chart on the "Bakflip Comparison" tab that customers seem to love. Bak Compare Chart
As far as the driving goes, Bak recommends that you use a tie down on both side if the cover isn't either fully open or fully closed. Shown here -
As far as the "Rolling cover" - I believe you're referring to the Roll-X
. I don't own one but the boss has one on his Tundra. He loves the Roll-X, even better than the Bakflip covers. With the Bakflip, he hates the fact that if the cover is folded up against the cab, you can't use the rear view mirror. The Roll-X doesn't go above the head rests if you have a back seat.
Also if you want to just drop the tailgate and put something in the bed, you have to open a Bakflip before closing the tailgate again. Just some subtle nuances but it annoyed him. He normally wants the Roll-X on his truck. (we're always putting new covers on his Tundra to shoot review and install videos).
The Roll-X will have a great low profile look with a vinyl top - same as the Bakflip VP which I have on my truck. I can take images if you'd like but they won't be on a Tacoma.