It's certainly interesting that it's more comfortable for you to use Page Down instead of two finger kinetic scrolling. I only find myself using the Page Down keys on Desktops instead of the mouse wheel. Well as I said, it's basically a matter of taste.
Btw. how are the screens these days? I've read that the resolution is quite low, but do they at least have good contrast / color spectrum / brightness / viewing angle? I'm asking because my father wants to buy one again (low res is actually a plus there).
As for page down, I think the nicest piece of it is that when I hit page down, I know exactly where to reset my eyes when reading something that's longer. Now, space usually worked in safari, but it was suprisingly unpredictable. Of course, pages meant using option+up/down or scrolling.. We all have our quirks, I guess. :)
I have the upgraded 1600x900 screen, so I can't speak to the quality of the lower resolution screen. I've heard it isn't as good, but I will say that for programming, the 1600x900 has been great. (I forgot to mention how much I hate glossy screens as opposed to matte...) From everything I've heard, the upgraded screen is much better.
Thanks for the heads up. I'm not sure yet whether 1600x900 is the right choice for him; Windows software is still not as resolution independent as it should be and he needs rather large text. I think that the retina pro would actually be quite good in that aspect because the scaled resolutions are very well implemented there, however $2.3k for my father's usecase is quite a stretch ;).
Btw. how are the screens these days? I've read that the resolution is quite low, but do they at least have good contrast / color spectrum / brightness / viewing angle? I'm asking because my father wants to buy one again (low res is actually a plus there).