Summary: Needed a replacement for the aging monitor that I had. Wanted a wide-screen IPS monitor that was a comfortable size. This fit the bill. It is bright, sharp, no dead-pixels and, true to IPS technology, viewable from all angles. It comes with a variety of cables (though, no HDMI cable) and the stand is really solid, too. It's not the cheapest monitor out there, but it is certainly the most bang for your buck.
Summary: I bought this because most of the reviews were so positive, and some said it was as good as the Apple IMac. Not even close. Especially displaying text. In my opinion, it doesn't look any sharper than any other monitor, and does not even come close to the Apple. I have another 20" hp monitor that looks just as good, both text and photos, and I see no difference in the ZR2240 comapred to the smaller hp. For the money, not worth it.
Summary: Excellent clarity for HD TV, computer use. Multiple inputs including fairly hard to find VGA input on a monitor this size. Easy toggling between inputs with easy to press push buttons which will hopefully not fail like the touch / heat activated inputs on my old monitor (the failure of those touch activated controls is why I bought this new monitor, so hopefully the physical controls will not be as fickle).
Summary: After doing my homework, I decided that I wanted an IPS monitor. Unfortunately, the price for an IPS monitor is usually $400 or higher because IPS is only available on larger monitors--usually greater than 24". I stumbled upon this great deal that Amazon was offering for a refurbished 21.5" IPS monitor from HP. It is such a pleasure having an HD widescreen monitor for the first time. I have vision problems & do a lot of online reading at my desk.
Summary: I have an HP monitor at work and decided to purchase one for home-use due to its pivot function. Turns out the image is very colorful (IPS) and everything is just crystal clear. I have dynamic contrast ratio and video overdrive both off and the thing is still a beast. I am a happy customer.
Summary: I bought this monitor as a second screen for my iMac. The IPS panel makes it a decent match for the iMac screen, although it is matte instead of glossy. It looks quite good. Potentially very very bright, I run it at about 25% brightness. Colours look good. Nice set of connectors and cables that come with it (although you'll need to buy an extra mini DisplayPort to DisplayPort cable to use it with an iMac.) Overall a solid smaller LCD monitor.