I agree with Malt
Been using my Xperia Z for about 2 months now and there's been no problem at all with viewing angles. Without having watched the reviews about them I wouldn't have even known that there was such a thing as a bad veining angle.
Also, the tittle of this thread reminded me of something. If you're getting an Xperia Z, watch this video:
Sony Xperia Z Tips & Tricks Episode 2: You Need To Know This! - YouTube
After having mine for about 5 days this protective cover got scratched in a few places and I was devastated because I thought it was the screen.
So yeah, if you find that you get a few scratches on this plastic cover, don't worry, there's a much more scratch-resistant glass underneath it if you peel it off