Haven't read through this entire thread but I just wanted to add my thoughts on this...
Love OSX (and the ability to run Windows & OSX on the same machine), but it would be much easier to stomach a purchase if Apple knocked $300-500 off their entire MBP line. They would see much greater adoption of the platform as well.
I know the Dell has shoddy build quality and customer service, I know the i7 in the Dell is the cheaper quad core, I know the screen is better on the MBP, I know the batter life is better (when running OSX), I know the video card is better, etc.
But $1250 better, TWICE the cost? I'm not sure I can justify $1250 for marginally better hardware no matter how much better OSX is.
I know Apple is a for-profit corporation, but I think they are being a bit short sighted. They are ridding a wave right now, they are "in", they are popular, if they were smart they would cut their margins a little (and would STILL have higher margins than their PC competitors) and would seize some of this momentum to grab some market share.
Lets look at where MBs are selling well. College Students! Why? Because most college students buy their computers in the Fall. What happens in the Fall? Apple offers a free iPod touch ($200) on top of the standard student discount ($100-$200), which adds up to a value of $300 to $400. When we see Apple adding that kind value/discount to their product offering they move a lot more product.
Between this and Apple's apparent lack of vision by tying themselves (for too long) to AT&T and ceding market share to Android, I'm not sure what to think.
And before you say something like "Apple doesn't care about market share", save your breath, that is a completely ridiculous statement. Market share MATTERS, it matters to developers, which make programs, which make the product more valuable, which MATTERS to consumers...
/rant