The Benq GL2251 has a maximum display resolution of 1680 x 1050 pixels. That's 15% less display resolution than a 1920 x 1080 pixels PC display, which is the most frequently found display resolution. Across all medium monitors that were released more than two years ago the display resolution ranges from 1366 x 768 pixels (worst) to 2560 x 1600 pixels (best).
Alternative PC screens that have a display resolution of 1680 x 1050 pixels currently available which you might also want to consider include the Fujitsu B22W-7 (£184.22), or the Asus VW22 (£126.42) which is cheaper.
If the display resolution of this PC screen is not many enough for you then you might want to look at the Eizo FlexScan S2100 (1600 x 1200 and cheaper); or the Viewsonic VA2349 (£123.60) (1920 x 1080 and higher rated), or the Benq RL2455 (£129.99) (1920 x 1080 and higher rated).