Well after asking here (and a couple of other places) I decided to buy an LG W2453TX monitor. It seemed a reasonable price with the resolution I wanted and the inputs I wanted.
However it isn't as good as I expected and I'm returning it, hopefully under DSR so I won't lose much money. The problem I have with it is the inconsistency of brightness/contrast/colour across the screen. I may be extra critical because I have 'tall' (i.e. 60 line) terminal windows on the screen running mutt etc. but for me the inconsistency is *very* noticeable. E.g. my mutt screen has cyan[ish] status bars at the top and bottom and they are quite different colours on the W2453TX. Playing with the angle of view varies the difference between top and bottom but you can never get it the same. In addition the text at the bottom of the screen is very 'spindly' compared to the top.
My old screen (a Dell 2001FP) is *miles* better, the status bars are near enough identical (well I can't see any difference) and the text looks the same everywhere.
Since this (minor) debacle I have done a bit more research into LCD monitors and their technology and have discovered that there are two or three fundamentally different types. I've discovered some useful sites with information about this:- http://www.tftcentral.co.uk/ http://www.flatpanelshd.com/
The types are:- TN - most cheap and fast displays are TN, good for gaming but colour rendition and viewing angle poor. PVA and MVA - sort of middle of the road, not as fast as TN but better accuracy. IPS - best for accuracy, but expensive.
It turns out that the Dell 2001FP I have is an IPS screen so I have been spoilt as regards accuracy. Current 24" screens using this technology are *expensive*, like £500 and upwards!
I'm trying to find a PVA (or maybe MVA) screen which isn't too expensive but at the moment I'm not having much success.
I guess much of the problem is that the main pressure nowadays is towards response speed and TN screens win on that front. The trouble is that they are rubbish for viewing angle which is a much maligned figure as far as I can tell. The W2453TX has a figure of 170 degrees for viewing angle which is a total joke, any angle much more than 45 degrees off centre produces all sorts of odd effects. The 2001FP on the other hand one can look at from any angle and the colours are unchanged.