The Samsung 226BW I have is simply stunning. The new version with wide color gamut is expectedly even better although I haven't seen it in action.
Just note that all LCD panels will suck in DX10 big time as there's no way to force vsync on. The result is horrible screen tearing.
But we all know DX10 is the biggest lie of the decade anyway, it's a step backwards in many ways. Basically they neutered the API by adding higher level code making it easyer for developers but way slower to process and limited functionality.