Pig, of course it depends on your price point!
anything at the low end is going to be a TN panel- great for input lag, but, pretty carpy for just about everything else.
Middle of the road is the *-pva which have a little worse lag but are better at everything else,
Higher end you're gonna be looking for a S-IPS or preferably an H-IPS;
They have low lag almost rivaling a TN panel, but offer color gamut and black depth that exceeds the *VA panels, better viewing angles and very minimal back-light bleed!.
A few good reads for your consideration:
Which lists specs such as panel type and lag/brightness, also lists all published reviews for each monitor- so you can read what all the "unbiased" professional reviewers have to say- and make up your own mind
Or do some "comparison" shopping over at Prad.de
They have a complete database of all panel types listed for practically every model and size produced and also a pro/con comparator-
You just have to have a bit of a wander around their site as some links open in German!
Another great LCD "primer" site is TFTcentral.co.uk's Panel-tech page
It does a pretty good job of explaining the differences between TN, and PVA, MVA, S-PVA, H-IPS, and S-IPS and what kind of performance you can expect from each panel type.
I know many people here seem to always just recommend what they have in their Sig! -and that bugs the ship out of me!
So I apologize in advance for committing that sin myself!
but, in this case, the best and newest technology for a 24" monitor (that isn't priced in the stratosphere!) is
and the HP LP2475w
is right up there with the Hazro (which we cannot buy here in the US, but, is one of the best gaming 24"ers offered in Europe) and is about a hundred Pounds cheaper.
Read some of the reviews- it blew the S-PVA Sammy 24" 245T
LP2475w thread on [H]ard
<---Long thread but, well worth the read!