Lots of threads already on this subject. What do you want to do with the monitor, games, graphics etc?
Opinions will vary but for that kind of money or there abouts you should take a look at any of the following;
Benq FP241W
Dell 2408WFP revision A01
NEC LCD24WMGX3
It does really depend on your main use, if gaming then you need to look at input lag and response speeds, graphics work will be colour reproduction and depth and also what are your viewing angles.
Yes it's a right headache.