21.5-inch iMac vs. 27-inch iMac vs 5K iMac: Which all-in-one desktop Mac should you get?

[iMore.com]

iMac Buyers Guide: A comparison of the different versions of Apple's razor-thin all-in-one Mac desktop​

Apple's iMac rewrote the company's fortunes at a time when Apple desperately needed a hit. The year was 1998. Steve Jobs had returned to take the helm of the ailing company, but Apple had spent years churning out poorly-differentiated beige boxes. Out comes a translucent blue all-in-one computer unlike anything else on the market. It sold like wildfire and set off a design renaissance in personal computing: within a couple of years, everyone was churning out colorful, cheerful PCs that mimicked Apple's hit system.

Fast forward to the modern day: the iMac has undergone some radical changes. Gone is the translucent case; gone is the bulky CRT display. In their place is an incredibly elegant flat panel all-in-one design that has gotten progressively thinner over the years as Apple has done everything it can to get the computer itself out of the way of the computing experience. Within the iMac product line, however, there are a lot of options to consider, so let's take a look at what Apple is offering.

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