One of the biggest factors in ghosting is response time. The lower the number the better.
Most of the "older" first generation LCD's had a very high response time.. 30 or even 40ms..
the standard for most "cheap" LCD's these days are 12 or 16ms.
Mine is 8ms.. and worked perfectly well for AH... the only ghosting I came across was in turret view in a tank, at full zoom, and sweeping quickly one way or another.. and it was just enough ghosting to be mildly annoying, but in no way did it effect my game play.
From what I've seen they go as fast as 2ms these days. It's possible your old monitor that you gave you wife had a very slow response time, hence all the ghosting.
Good luck!
NOTE: It appears that model you are looking at has a 6ms response time... Should work great for you! I'm jealous.. if only I had the means to get me one of those suckers!!!
hahah enjoy