Good luck with the kit Tom I have found the Rocket blower I have used for over two years works just fine.. Good to hear positive responses from those who have the self cleaning systems built in. though I am still not happy with the idea of them.. Where does the dust end up? On some sticky pads that will need to be replaced at your expense? 

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt