For users of either size iPad or even an iPhone 6 Plus, the Keys-To-Go is a solid choice. Not only does it ditch the requirement to replace (or remove) the case on your device, it's lightweight, super portable, quiet, and offers a familiar typing experience.

You can use any case; Great battery life

Slides around on smooth work surfaces

Logitech has been building iPad keyboards for years – they were among the first to recognize the value of doing so, in fact. But for all their experience, and various iterations of the concept of the keyboard case, the company may have got it most right with a remarkably simple design introduced...

This unusual keyboard for iOS is made of spill-proof fabric and is thinner than the iPad Air 2.

Though lightweight and durable, the Logitech Keys-to-Go standalone Bluetooth keyboard's lacking tactile feedback can make for inaccurate typing.

Lightweight and compact; Familiar keyboard layout; FabricSkin material is spill/dirt proof and cleans easily

Relatively expensive; FabricSkin material reduces the tactile feel of the keyboard

To some people, a keyboard is just a keyboard. But they may be the same type who can pick any random mechanical pencil off of retail peg-hooks and feel completely satisfied. I don't know how to do that, since even mechanical pencils are tools in my eyes.

I am suffering from ALS, and my DVA-issued iPad is my constant companion, my only efficient means of communication. However, I don't want to drag both it and the computer around, this so I can work on writing articles while stuck at the hospital for an appointment.

Logitech's latest Bluetooth keyboard is impressively slim and light for easy travel. But its spill-resistant body material and cramped keys make for a typing experience that isn't as good as most other mobile keyboards.

Extremely slim and portable; Dedicated keys for Windows and Android; Spill-resistant design

Cramped keys and shallow travel tended to induce typos; Included stand won't work with thicker devices; No backlighting; Pricey for what it is

For those wanting an ultra-portable keyboard to use with your iPhone or iPad, but don't want the bulk and weight of a keyboard case should consider the Logitech Keys to Go.

Portable keyboards are becoming quite popular as people continue to use tablets. Logitech has a number of them on the market, but they have something new called Keys-To-Go. It was released for iOS devices last November, and due to its popularity, they have released a new version that is compatible...

The best part about the Logitech Keys-to-Go is that it's completely device agnostic. Tablet keyboard folios may be a perfect match for something specific, but what happens when you decide to upgrade? What if you want to use the keyboard with a smartphone or PC?