Nowthenmobile, if you haven't made your decision yet, Sony is offering a deal in the UK on ereaders. There are a few threads in the Sony forum about the discount. Make your purchase before 24th December and then claim back the VAT from Sony.
http://www.sony.co.uk/hub/1237479399273
There is also an advert on the Waterstones website.
http://www.waterstones.com/waterston...vat-back/2238/