Not a Mac user, but was looking at buying a MacBook in the local Apple store. I used Mail to see the difference between the 15-inch glossy display, and the 15-inch high-res antiglare display. On the 15-inch high-res antiglare, the screen was outstanding, I could *view* Mail without issues by zooming with control+ - very readable.
But when I hit the compose button, I was definitely dismayed and suprised. I generally send 10pt or 12pt font mails in Windows. When I set the compose to 12pt on the high-res display, I could barely read it. I tried to zoom, could not. I tried to pump up the default fonts in the Accessibility system preference, did not matter. Sure I could set the font to 24pt, but I don't want my recipients getting 24pt emails. Essentially the exact same issue discussed in this thread.
I talked to one of the staffers at the Mac store, who was more clueless than me. I had to show him how to zoom email viewing for example. Mind you, I never used a Mac before entering the store. Commentary about Apple store staff would be another topic. He went and asked someone else, and got an answer of no way to do it. Another staffer told me you could get an antiglare low-resolution display. I told him I didn't think so, he looked it up and said I was right.
I wanted to relay this experience, because as a non-Mac user, looking to buy the product, I was suprised to find such an unusable experience in something as fundamental as composing email. It left me wondering if the entire Mac interface had this issue. The lower-resolution glossy display was somewhat more readable, but not by much. And the glare on the screen was really distracting. And no antiglare option for lower-resolution.
I simply have never run into this using a PC. For the record, the iPad allows the accessibility option of specifying a large default font size for viewing, without changing the font used to compose. So iPad got it right. Disappointed to see this in the Mac, turned me off from buying one.