Defective iMac Screens

Question

In early November I decided to make the move from my 6 year old PC to the Mac world. I used to build my own high end PC's for years, never really had any issues at all, hardware or software, but decided a giant black dust collecting box was no longer for me.
From Apple.ca, I ordered the top of the line custom iMac, 27", Haswell i7 3.5GHz, 16GB, GTX780M 4GB, 3TB Fusion drive, and 3 yr Apple Care, it took about 2 1/2 weeks to arrive.
Love the keyboard and mouse, the screen was super nice (but I'm used to having good IPS screens). Over about 3 days I noticed 3 dead pixels (not sure if they developed over time or I had them and didn't initially notice). Being a bit OCD, I sent it back, the replacement wouldn't arrive until Xmas, so I cancelled and waited to order in the new year. All the Apple online techs were fabulous to deal with.
Beginning of January I ordered another iMac, it arrived 2 weeks later, and after maybe an hour of use I noticed a very bad screen issue, the top of the screen was neutral, and the bottom had a yellow cast, very annoying for even web surfing, let alone graphic work. So I carried that back to the UPS store and had a replacement ordered, it arrived 2 weeks later, I opened it up and sure enough, a smudge or "finger print" on the inside of the screen. Very upsetting. So, it was already almost February and March-May I'm super busy with photo work (10k-20k photos I have to work on) so I couldn't try another replacement, because I have to get working, and no time to learn a new OS, buy and install new software.
I loved the iMac, but didn't think there should be any flaws, no matter how "small" they are on a $3200 computer. The main reason I got the iMac was for the 27" high res IPS screen. I could have built my own and got a similar Dell IPS screen (that's what I have now from 2007, the same panel that was in the old Apple Cinema Displays). My monitors are all flawless, no dead/hot pixels, no colour shifts, nice and even backlighting, my $599, two year old LG 1080P plasma TV is perfect too. My gf's new $550 15" Dell laptop is also flawless.
I don't have a car and the only Apple Store in town is a 30 min bus ride away, not fun to try to carry a 27" iMac on a bus in -30c weather.
I do love the iMac though, it's what I want, and honestly, the support from Apple has been absolutely superb. I admit I'm a bit on the OCD side, some people say they would put up with a few dead pixels or a finger print/smudge inside the screen, but my mind says $3200 so it should be flawless.
Am I asking too much? Is there such thing as an iMac that doesn't have defective pixels, or something wrong?
I'm really bummed but will have to wait until summer to decide what to do (I hope I can hold onto the money I've been saving and don't run into any unexpected financial hits). I want an iMac, but want one without defects. Is there such a thing out there? Maybe I'm just cursed? I wonder sometimes.
So back to my 6 yo PC and 20" IPS panel, with sticky A and E keys. LOL.
Again hats off to the many, MANY Apple support people I talked to over the past 2-3 months, they have all been awesome and accomadating.

Answer 1

No. Plasma deposition is a method for applying an antireflective coating. It's not polarization as such, though I can't say that the antireflective coating might not involve polarization in some way. Nothing I can find indicates that it does, though.
Regards.