I'd get a BakFlip MX4 cover. Best reviews on the net. Getting one soon.Got my ‘21 BE last week and really like it. I have been reviewing tonneau covers for the last month and struggled with decision. Almost went back to Extang 2.0 soft tri-fold which I had on the ‘18 RTL-T. It was good. But I found a great deal on a Lomax hard tri fold on TonneauCovered.com. Super price and fast shipping.
Just wanted to share experience. The install was the easiest I have experienced in my last four covers. The fit is exceptional. It appears really well made, looks great, and is easy open and close. Very solid.
Will see how it performs over time but right now I would give it 5 stars.