Are there any third party displays that have similar resolution and image quality to the Thunderbolt Display?
The last time I checked up on this, about 6 months ago, the only monitor I could find that matches the Apple display was the Dell UltraSharp U2412M. However it's a 24" and it wasn't that cheap. Dell does however have a bigger model in the range which is the Dell UltraSharp U2711.



Both are brilliant.

I ended up buying a 27" iMac and stopped looking further