First my perspectives from my 2005 Ram purchase then my perspectives from my 2020 Ram purchase.
My first truck was 2005.
I looked long and hard at all makes and models. It is my from but very humble opinion that there was NOT a bad one out there. The *** ones, the US (Canadian) ones, ALL were great trucks. TBH I only "went Ram" in 05 because they were the only ones offering "employees (or family?) pricing to the general public in a marketing gimmick at the time, plus it was the original one that went with the semi truck look with the hood and fenders. Others were coming online with that style but the Ram was still more pronounced. I owned it for 15 years and a quarter-million miles including towing horse, and while I do have some gripes I won't cover them here because I have no way of knowing that had I had a Chevy or Toy for an equal amount of time those too might not have had problems along with age and wear.
When I was due for my next truck in 2020 I admit I had a preference for Ram because it was the devil I knew vs the devil I didn't.
I made a half-hearted attempt to look at other makes and models and if something had truly jumped out at me I am reasonably certain that I would have moved on from Ram onto another brand - IF something caught my fancy.
Again, as in 05, I found that there was not any bad truck. All were good.
What finally sealed Ram for me was the RamBox. I really really wanted the RamBox. While there is debates as to it's utility and pros/cons, for my situation and my use-case the RamBox is a big winner.
I almost went for the new fangled GMC magic Transformers tailgate, but in second thought the fancy tailgate is really a solution looking for a problem, not a must-have. Sure, if my year of Ram came with such a tailgate you could catch me being a fan of it and talking it up, but I decided that tailgate was not enough of a "thing" to push me to GMC.
Now, on to your question.
The only Con I have on the 20 Ram is the RamBox lids. They are made of plastic (polymer?) , not sheet metal, so they warp slightly in summer and winter. Not horribly so, bit when you pay $50k the freaking seams better be on pointe!!! I say it's off kilter just enough to make any discriminating autophile shake his head at the typical modern American lack of quality when compared to, say, Germany or Japan. It is so indicative and stereotypical of shoddy American nowadays problems that it sometimes just ******* me off to no end to see it. Most times though, the casual onlooker never notices it, and I never notice it.
Other than the weak lids, I'm a Big Fan of RamBox and Ram. Highly recommend. Ten out of ten. (Except the RamBox lids, only 6/10 for those.)