Curved: yes or no?
As many as six out of the nine monitors in this test are not straight but bent. This is called 'curved.' The curve is minimal: the radius still measures about 10 feet in the most extreme cases. While curved televisions do not add that much value, curved monitors are more interesting. Normally you sit at a short distance from the monitor, which means that the edges are further away from you than the middile. This means your viewing angle is slightly off, with possibly differences in brightness and colours as a result. A slight curve brings the edges closer. Because you simply sit in front of your monitor it is not relevant that there is just one 'sweet spot.' The question that remains is: do lines in for example CAM/CAM-programs not look distorted? We concluded this is not the case. You get used to it relatively fast and adjust accordingly.
A drawback of curved monitors is that they, looking at prices, are a lot more expensive than the regular monitors. Manufacturers are looking to have a higher margin on these 'premium' models. The difference is not that big if we look at the lowest prices: the monitor market remains a hostile market, even in the premium segment.
In short, we would not call 'curved' a must-have, but it does have an added value and with that a - limited - additional price is justifiable.