IPad Air 2 touch sensitivity problems

Question

I purchased and iPad Air 2 two days ago.  I noticed the screen had sensitivity problems around the outer edges which were apparent when trying to use the keyboard.  Keys such as "Q," the microphone button and then pressing "done" as well as the character keyboard button and switching between various keyboards, etc. where not responding well to touch.  I exchanged it for another one the next day, brought it home and it exhibited the same problems.  Brought the second one back the store and the two sales associates noted the same thing only they had not come across this before.  They brought out another one which I tried at the store and it had the same unresponsive key problems.  Each iPad exhibited different degrees of this problem.  Bouncing between keys "q" "a" "z" in rapid succession or trying to select the different character keyboards at the very bottom of the screen made the problem.  Sometimes trying to compose an email or deleting one using the icons at the top of the screen exited the same problems.  That was three iPad Air 2's.  Several demo units exhibited the same problem while several others did not.  Is this a defective manufacturing issue or a potential design flaw associated with the new laminated layers of screen?

Answer 1

Two of the three demo units at the Apple store worked great.  One of them exhibited the same problems I had.  Composing emails was a problem as well as trying to delete email.  Oddly, another persons iPad I tried worked well but they ordered their's online through Apple.  I beginning to believe that there is flawed lot of manufactured iPads.  I refuse to try to buy another one at the Apple Store in RI right now.  I may try to order one online and see what happens.  If that exhibits problems, then I'm done with the iPad Air 2 period.  I'll wait another year or so for the next version.  I would take your's back if I were you. 
P.S. One thing I noticed with all the problem iPads is that if you're using them microphone button on the keyboard, each model's "ding" noise had some crackling sound with it.  I could replicate it if I waited for a minute or so.  If I pressed the microphone button immediately afterward, it sounded normal.  It's weird - not sure if it's related or not to the sensitivity issue.