I am really enjoying my new 27″ iMac, in particular the large screen is fantastic for editing photographs.
I have been lucky (and I suspect many others have as well) not to experience any flickering with my 27″ screen, it appears that some have had issues.
I know some don’t like glossy screens but I have not found it to be a problem. The widescreen format allows me to view the whole image and all the relevant tools alongside making it a superb photo editing experience.