4. Amazon Kindle Fire HD
From £159, amazon.co.uk
This seven-inch display is bright and colourful, though no match for the Nook’s. Still, this is a neat colour-screen reader with much to recommend it. Like Amazon’s daily free app, for instance, and, for Amazon Prime readers there’s even a selection of books available for free rental like a public library but with fewer dog-ears. Like the Nook, Amazon has manhandled Android into a less intimidating guise, though the apps available are substantially reduced (well under 50,000). The Fire HD has powerful stereo speakers on the back, which is handy if you’re watching a movie, say. The price reflects the fact that the lock screen displays Amazon special offers. If you tire of these, paying £10 once will turn them off.