The bumps will never go away. I have 3 friends with them, one on an F150, one with a Silverado 1500, another with a new Ram 1500. All of them have a crease where the tonneau folds.
If you're looking for a sleek look, a soft trifold won't do it. The Trifecta is nice enough, but I personally never ever need to just access the last 1/3 of my bed, and with the Trifecta you need to lower the tailgate anyways to open it. When the tonneau is all the way open, it blocks the last 1/3 of the bed. I understand why some guys want a hard trifold, as it offers for security. I can't see the benefits at all of a soft trifold, a soft roll up is just as secure, looks better, and offers better access to the bed.
I made a video a few months ago showing the differences between my soft roll up Access Vanish cover compared to my friends Extang Trifecta. If you go with a hard Cover I don't be you at all, but check out a quality roll up and you may be surprised how nice it is.