The Acer AL1912 Monitor is excellent for a budget priced screen. I picked mine up form Tesco a couple of years back now and it hasnt failed me yet! I am a big gamer and I find the colours and refresh rate on this screen MORE than acceptable. I have played games such as Fallout 3, World of warcraft, City of heros, S.T.A.L.K.E.R and many more all of which are quite demanding on the refresh rate and I have yet to notice any ghosting apart from a bright white cursor on a pure black background then there is a sligh trail but you'd have troiuble finding better for this price.
This isnt just a gaming monitor though, I have gone through most of university with this programming for hours at a time and text and spreadsheets are very clear and reduced my eye strain considerably.
If your looking for a decent and reasonably priced Monitor the AL1912 is the one for you.