I'm now on my second 15.4" with a defective display. As bright and crisp as the new LED-backlit panels are, I'm reluctant to try a thrid based on the problems reported by others combined with my own negative experience. So, those of you who have purchased the 17" HD, how do you feel about it? Any noteable defects? The 15.4" is really the ideal size for me, but I'll gladly give up a small bit of portability to get a MBP with a nice screen.