I purchased the Belkin clear one at the Apple Store. From what I was told, the machine wasn't able to install screen protectors on the 7+. Had the rep install it! It came out awesome.
I do see the slight rainbow effect caused by the protector not being fitted, but I had that happen with every tempered glass protector on my 6S+. I honestly don't notice the rainbow effect, unless I'm looking for it.
Btw, the tech21 mesh case is horrible. So bulky and big. It looks decent with the JB but too big. Wouldn't recommend it on an already big phone. Maybe for the regular 7.
I do see the slight rainbow effect caused by the protector not being fitted, but I had that happen with every tempered glass protector on my 6S+. I honestly don't notice the rainbow effect, unless I'm looking for it.
Btw, the tech21 mesh case is horrible. So bulky and big. It looks decent with the JB but too big. Wouldn't recommend it on an already big phone. Maybe for the regular 7.