If there's an Apple store near you, check it out there. Just try to be objective about it.
Dell and some of the others aren't really bad at the upper end of their hardware. It's usually their budget models that suck, and Apple has nothing in an equivalent price range. The screen is a decent implementation, but it's not really that special. They still use TN panels because they're cost effective. I'm not going into the topic of color reproduction, because it's too time consuming and no one on here seems to understand the topic. The uniformity on recent ones seems to be pretty decent.
Once again if you compare it to the best the other oems have to offer, it's a bit different. Usually on here I see the 15" macbook pro compared to laptops that cost half as much, even if the other brand has better models than the ones chosen for reference. Since it's an Apple enthusiast site, the assumption is that if money is no objective, you go with a Mac, but that's a terrible way to make an objective comparison. Apple hardware has given me problems just like other computers.
You make too many assumptions without even asking what he owns or if it works well for him. This is just a weird concept that everything without an Apple logo is a piece of crap. There are things I really like about the macbooks, but they are not infallible machines.