An iMac might be an option if they had an anti-glare screen option, but they do not, do they?
The lighting conditions you work in make a huge physiological difference when judging tone and color. if you manage those conditions well, whether a display has a matte on gloss cover on it just isn't an issue.
I think I am a very careful worker.
- I work on a 27' iMac (white LED backlit). I also have and use an Eizo CG Display.
- I do a good job of profiling my displays with a good tool (i1 Display Pro and i1 Profiler for the iMac; Color Navigator 6 and i1 Display Pro for the CG).
- I have a neutral colored wall behind my computer desk.
- When doing color critical work -- and I have some clients who are extremely sensitive about how their products are photographically rendered -- I simply make sure I don't have a light turned on that causes glare or reflections on the screen. I'd describe it as a "dim cave" rather than a "dark" or "pitch black" cave.
Thus the lack of an anti-glare screen on the iMac just isn't an issue.