I have the Accu Chek Mobile but only use it as a spare in emergencies because the replacement cassettes are exorbitant. £25 for 50 strips retail from pharmacies, about half that or less on eBay. However, the meter itself is very convenient and more user-friendly because of the cassette for the strips, meaning you don't have to handle the strips and the whole kit comes as one piece, so easier to carry round. I just can't afford to use it regularly so stick to my Codefree.