check out the BenQ FP241W or the Eizo FlexScan HD2441W. The later of the two is probably the better monitor but the BenQ is far far cheaper so it's the better buy. What exactly are you going to be using the monitor for?
Take a look at the Dell 24" too, it's a good monitor and they have good deals on at various times. We just bought a couple of them from a third-party for £435 each (~€600).