Undercover Ultra Flex Matte tonneau: The clamps will pull the plastic bed rail toppers up and deform the seals if you're not attentive during install and readjust as needed. I don't hate it but at this price I would give another style a try, next time. No serious complaints, but if this goes away someday it will likely be thrown out instead of sold used...
Shorty antenna: This one is the right height for me, and it seriously reduced my FM reception range and increased susceptibility to noise. But I listen to podcasts or streaming media all day, using Bluetooth, exclusively.
Bedrug: Everything like this is installed using double-sided tape nowadays, and the pieces they include for the tailgate aren't large enough.
Modesta ceramic paint coating
Skid plate with integrated step: Easy to install. It goes under factory towhooks with the longer bolts they include. Cheaper and easier to install than a front cam setup.
Aries ActionTrac powered running boards: I got these right after Rockslide Engineering sold the line to Aries at the beginning of 2018, after seeing them at SEMA. The customer support from Aries is awesome. I get compliments on how fast or cool they are just about any time someone see them. I like how fast they are, but the lights they come with won't last. I'll add a few rock lights to the harness as replacements, eventually. They are the absolute most expensive boards you'll find but my 5'-tall wife and 10yr old LOVE them even more than I do.
There are YouTube vids of them in action if you search.