I have the UnderCover Flex. I chose it because I like the textured finish and because is uses prop rods to hold it vertical in the all the way open position. Other models have the cover resting on (or very close to) the cab. See stock photos in the link:
RealTruck UnderCover Armor Flex Hard Folding Tonneau Cover | RealTruck

 

I'm finally getting around to buying a bedcover now that I won't have a large dog crate in the back as often. The Bakflip MX4 seems to be the best selling cover out there and has tons of great feedback. There is a new version with some additional improvements too. I'm tempted to go that route. The UnderCover Armor flex posted before me looks to be a very similar design too, at nearly the same price point.

 

I've got the roll-n-lock cover. Very easy to use, love it. Not sure how it compares price-wise to the other options.

 

If he likes the BAKFlip MX4, you'll LOVE the all-new RealTruck BAKFlip MX4 (GEN 3) Hard Folding Tonneau Cover! The improved design features reinforced stability, all-new tight-fit clamps for superior weather resistance, and an upgraded auto-latch locking system for unbeatable protection. PM me or email me directly at forums@realtruck.com for pricing, availability, shipping times, and to ensure a perfect fit!

 

I have the Lomax tri fold with the diamond plate aluminum top. Very strong you can load the top with 500 lbs, and it sets down below the bed sides if you want to add any type rack to the bed side top or stake pockets. You can get it at shop.agricover.com

 

I chose after many years of dealing with covers for my Pick Ups ( Snaps versus velcro etc.) a roll up with velcro because its simple easy to use and does the job. If you store valuables then maybe a heavy cover with a locking mechanism . I have seen the hard covers for aerodynamic etc. painted to match the truck ( Lots of money ) but my roll up does fine .. Cap World is where I bought mine but there are plenty of places around today form low cost to a LOT of money !

 

I had ExTang Trifecta soft-folding covers on several trucks and always liked them. Now with my gen3 I have a RC low profile hard-folding cover Hard Low Profile Bed Cover | 5' Bed | Chevy/GMC Canyon/Colorado (15-25) which is very similar to the Bakflip. I really like the matte finish and the added security especially since the tailgate locks.

 

I had ExTang Trifecta soft-folding covers on several trucks and always liked them. Now with my gen3 I have a RC low profile hard-folding cover Hard Low Profile Bed Cover | 5' Bed | Chevy/GMC Canyon/Colorado (15-25) which is very similar to the Bakflip. I really like the matte finish and the added security especially since the tailgate locks.

Interesting. That one is a couple hundred less than the other two mentioned. Does that section nearest the cab fold up too? If so, does it have a prop rod to keep it secure while driving? I couldn't tell from their website.

 

I have a Retrax Pro MX on my truck. Not the cheapest, but the best cover I could find.

RealTruck RetraxPRO MX Manual Retractable Tonneau Cover | RealTruck

Get the RealTruck RetraxPRO MX Manual Retractable Tonneau Cover from RealTruck fast with free shipping in the lower 48 United States. Our team of product experts, extensive image galleries, and legendary customer service make it easy to get the right part the first time.

realtruck.com

 

I second the Lomax. love it. had it on my last two two trucks and this one. no leaks low profile. and a spray in liner texture. super easy to completely remove in less than 5 minutes for full bed access. it just clicks back in place.

LOMAX Folding Hard Tonneau Cover | Tri Fold Truck Bed Covers

 

I've had 2 rigid covers on 2 different Colorados. The 1st one was a folding cover. Worked well, but was inconvenient to get the last panel out of the way to clear the entire bed length.

The 2nd cover is a roll-up and much better. Takes up less space and easier to remove when necessary.

 

I have the UnderCover UltraFlex on mine

 

If you can afford a hard roll-up that is the best way to go. I've had soft roll up, soft tri-fold, hard tri-fold, and now a hard roll up and this one is where it's at. Nice flush fit, good security and protection, but can be rolled 98% out of the way in seconds to give you full bed access without blocking view out the rear glass.

 

l have had the Bak Flip and a soft cover both on my 2022 Canyon AT 4. My preference is the hard Bak Flip. No issues. Durable and sturdy.

 

Only issue I've had with the BACKFLIP were the rubber seals between the panels. When they crack or break, you're screwed because no one sells replacements. You literally have to buy another cover. Here's what I'm talking about: https://www.coloradofans.com/threads/folding-tonneau-cover-seal.447667/?post_id=5669653#post-5669653

When I'm ready to buy another cover, I'll shop around for a roll-up instead.

 

I have the Fold A Cover G4 Elite. It was probably an option when first purchased. Great cover. Lovable and weather proof.