"There are, of course, features that the PG221 has and the 215TW doesn’t, but it’s going to be a question of whether those features are needed by the potential buyer. In a pure battle between the 215TW and the PG221 on the image quality front, the Samsung was notably better than the Asus. But, after a bit of tweaking, the image quality delivered by the PG221 was still pretty good. I guess it’s a question of whether you need the extra features that the Asus provides, or whether you’re after a great all-round monitor at a fantastic price.
I can't help but feel that, because of the 215TW's aggressive pricing, the PG221 (even with its fantastic set of features) just doesn't do enough to justify spending any more than £240 on a 20", 21" or 22" widescreen monitor."