Did you know that the Casio EX-Z20 sold at Boots is actually exactly the same as the casio EX-Z80. You can buy the black one on line for £89.99 and use code LGDK29 to get £5 off. Also you get an extra 600 advantage points.
update - delivered in 2 days and was an EX-Z80
Build quality is patchy so mine is going back