I've been extremely pleased with my Weathertech alloy cover. Had a few different brands and the Weathertech is exceptional. Also made in the USA

Peragon just introduced their Tectonic model. Hard cover, folds in three sections, you can slide the folded sections back and forth. You can remove the panels (30 lbs each). You can load 400 lbs on top of the cover and walk on the closed cover. It is aluminum with a bedliner-like finish.

US company, family-owned, great customer service. I was an early purchaser and they put me in touch with one of their senior production guys to answer any questions I had before ordering one.

Installed on my F150 Raptor - easy install. No water leaks at all in 2 months (we have frequent thunderstorms, parked and while driving).

As secure any any cover (aluminum. full length rails on both sides), with two locks.

Getting great reviews on YouTube and on their site.

Diamondbacks are well made too. I chose the Tectonic since you can move the folded covers to front, middle or rear positions.