88% of the reviews on Amazon.com give this product a positive rating.

Display ; Design ; Speakers ; Accessories

Fusion drive not standard ; Chunky display bezel

Apple's smallest all-in-one features a great design and fantastic 4K display. Just make sure you upgrade to the Fusion Drive (at the very least) for faster boot and resume times.

Solid build quality ; Slick design ; Rechardable accessories ; Decent speakers

Jagged, 1080p display fonts ; Fusion Drive not standard ; Awkward port location ; No height adjustment

Despite lacking a high-resolution display, Apple's remains an attractive and highly usable computer. Just remember to upgrade to a Fusion Drive to improve boot and loading times.

4K screen resolution in top-end model looks great, new keyboard, faster performance than predecessor

Slow 5,400rpm hard drive as standard, mouse uncomfortable to use, no post-purchase RAM upgrades, Fusion Drive limits flash to 24GB (down from 128GB)

If you are still wanting to be bound to the desk and go Apple then the iMac is certainly the way to do it. Going Retina is certainly worth the extra cash with this 21.5-inch model - delivering ultra high-definition 4K without breaking the bank.

Apple upgrades the 21.5-inch iMac with a stunning 4K-resolution display, along with faster processors and Thunderbolt 2. The redesigned keyboard, mouse and trackpad all have rechargeable batteries and lightning connectors.

The new processors are still one generation behind Intel's latest and there are no discrete graphics options. No HDMI input means it can't double as a TV monitor.

The smallest Apple iMac trades up to a 4K display, and jumps to newer, but still not the latest, processors. While the design hasn't changed, newly crafted accessories with rechargeable batteries and Lightning connectors add flair and convenience.

Depending on your point of view, and which model you’re looking at, the 21.5in iMac is either a stroke of minimalist genius or an overpriced poseur. Apple’s decision to employ slow HDDs across the range is cynical at best and, given the complete lack...

The 21.5in iMac with 4K Retina display might not be as big as the 27in iMac, and it might not have as many pixels as that model, but it finally brings the Retina display on the iMac to around the £1,000 mark, which we think it a great deal - especially...

4K resolution is now an option ; Improved color accuracy ; Attractive design ; Input devices are now rechargeable ; Robust audio

Faster Fusion Drives are an up-sell, even on more expensive models ; Slow start-up with the entry-level 5,400 rpm hard drive ; Discrete graphics no longeroffered on the 21.5-inch iMac

The iMac is still the best all-in-one, with an attractive (if predictable) design, near-standard 4K and 5K screens, and even better color accuracy than before. The 21.5-inch version is in some ways the more interesting of the two models, as this is the...