Thanks everyone for your input.
I decided to change my order to the two Asus PA249Q AH-IPS panels.
We will just be casual gamers and if the boys get more serious in the next couple years we can always buy a gaming monitor then.
Here are the full specifications:
http://www.asus.com/Monitors_Projectors/PA249Q/#specifications
The main highlights for me are (I'm giving priority to the photo editing):
Resolution: 1920x1200
Response Time : 6ms (Gray to Gray)
Viewing Angle (CR≧10) : 178°(H)/178°(V)
Display Colors : 1073.7M (10bit)
Colour Accuracy: True, consistent color with 99% Adobe RGB, 100% sRGB, and 120% NTSC
Brightness(Max) : 350 cd/㎡
Swivel : Yes
Pivot : Yes
It's certainly expensive (overpriced) but I think I will be happy working on these day to day so I'm hoping it will be worth it.
Some of the monitors suggested in the thread look great and interesting at better value, so thanks again for your suggestions and help.
Cheers,
Rob.