BAK Revolver MX4 vs. Undercover Ultra Flex tonneau cover - Your thoughts?

[Platimatter]

My BAK Revolver X4S just arrived today. No more carpet / fabric on the underside. And my truck is going to be ready to pick up Wednesday morning!
Can't. Hardly. Wait.

Congrats! I'm sure you are going to like that cover. Buddy of mine has the exact one and I was torn between that one and the undercover.

 

[Wvmtneer]

I currently have an Extang soild fold(original) and it leaks in the back 1/3 joint. I plan on purchasing an undercover armor flex after I order a Tremor or Raptor this spring.