I've had roll-up tonneaus before. This time I wanted to try a tri-fold on my latest truck. I tried out a Gator hard tri-fold, and while it had a nice form factor, I only kept it on for about a week. I didn't like flipping it up against the cab to get full use of the bed. I quickly went back to a roll-up. I'm partial to the Access line. I've had the Access Limited/Original on previous trucks. Got the slightly lower-profile Access Lorado this time. Pretty much the same tonneau, just sits about 1/2" lower.
A lot of tri-fold tonneaus have quick-detach features some people like. To use this, however, you have to find somewhere to stow the tonneau. I like just being able to roll mine up tight against the cab.
We're talking about vinyl & fabric, so security (or lack thereof) will be a wash between the two. Out of sight, out of mind... Honest people honest... etc, etc.