A problem with both Kindle and un-modified Nook is that both Amazon and B&N, respectively, wrap a proprietary superstructure around the Android os, making their tablets unable to run most Android apps. And of course, neither can run the other's eBooks.
There is, however a workaround, called rooting the machine. This gives direct access to the root of the Android os and turns the machine into a straight android device. Unfortunately, this is difficult to do with the Kindle, with a sizeable chance of bricking the machine. The Nook Color and Tablet, on the other hand root easily, and there is a device, the N2A card, that fits in the card slot, and turns the Nook into a double boot machine that can be booted either as a straight Android tablet or as a Nook, and removing the card turns it back into a straight Nook with no trace that it was ever rooted. Hence not voiding the warranty. I got a refurbished Nook Tablet for US$169 and a 32 gigabyte card for US$79, giving me a very well-built Android tablet with 27 gigabytes available memory for US$248. With the Nook for Android and Kindle for Android apps it can read either book format, and can run any app available for the Android os. Currently the price for a NEW Nook Tablet 16 gig machine is down to US$179, and the cost of a 32 gig N2A card is less that twice the cost of a card that size alone. The possible kicker is that I don't know about the availability and price of Nooks in the UK.
Will
There is, however a workaround, called rooting the machine. This gives direct access to the root of the Android os and turns the machine into a straight android device. Unfortunately, this is difficult to do with the Kindle, with a sizeable chance of bricking the machine. The Nook Color and Tablet, on the other hand root easily, and there is a device, the N2A card, that fits in the card slot, and turns the Nook into a double boot machine that can be booted either as a straight Android tablet or as a Nook, and removing the card turns it back into a straight Nook with no trace that it was ever rooted. Hence not voiding the warranty. I got a refurbished Nook Tablet for US$169 and a 32 gigabyte card for US$79, giving me a very well-built Android tablet with 27 gigabytes available memory for US$248. With the Nook for Android and Kindle for Android apps it can read either book format, and can run any app available for the Android os. Currently the price for a NEW Nook Tablet 16 gig machine is down to US$179, and the cost of a 32 gig N2A card is less that twice the cost of a card that size alone. The possible kicker is that I don't know about the availability and price of Nooks in the UK.
Will