I wish Apple would introduce a size somewhere between 21 and 27.
I agree, such a big gap between 21.5 and the 27.
Not much more of a gap then when they sold 20" and 24".
When I bought my latest iMac I was coming from a 24" unit. Not wanting to go to the 27" because I *thought* it was too big. I found the 21.5 to be too small and the 27" not really much bigger than the 24".
In fact the 27" isn't all that much bigger than the 24"
Measurements from the desktop .......
24" - 20 1/4" height 22 1/2" width
27" - 20 1/4" height 25 1/2" width
It really helps when you can put the two or three, side by side, to do a real world comparison.
The 27" is only 3" wider than the 24".