Cheryl,
The main advantage to an iMac over a Mini is performance. The speed
difference is considerable. The primary reason you have those
options for displays is for multi-media applications such as iMovieHD
which of course is not very useful for people who are blind. I also
believe that an iMac will be useful longer than a Mini as its power
and speed will outlast that of a Mini. The only advantage I see to a
20 inch display over the 17 inch one is for those multi-media
situations. We have some iMacs at our school and the individuals
using them are extremely impressed. It is considerably more
expensive, although once you add keyboard, mouse and display, it's
really not that much more. Hope that was the sort of thing you were
looking for.
Tim Kilburn
& Carter the Canine
Fort McMurray, AB Canada
