BLiNK have a proper ANSU machine for cleaning injectors
http://www.blinkmotorsport.com/injectors.html
You might be able to find some nice ones on this site.
Some stuff is priced pretty damn good.
http://www.cliosport.net/threads/original-magneti-marelli-172-182-injectors-for-€25-each.795322/
I knew I should have ordered some before the f**king referendum, now the pound's collapsed and exchange rate is in the toilet.