2016LTZinFL

Not looking to spend a ton, $300-$400, for a tonneau cover. Based on the research that I have done, seems the Gator Roll up and the Truxedo Lo Pro fit the bill...I am looking for a low profile, and both of these sit about .5" above the bed. Any other that I should look at? Thanks!

In all seriousness, is my 2016 4x2 LTZ ever going to ride smooth over 70mph. I see a ton of posts about the vibration issue, but see very little about the issue being corrected by the dealer. Please tell me that I did not make a mistake by buying this truck as 75% of my driving is on the highway. I even asked my service writer to search ch the Internet and he will see that this is not a unique issue to my truck.