I may be opening up a really big can of worms here, but I just have to ask..why would you want "cheap" heads for a machine that is such a key part of your business? You can't possible tell me you are going to expect "cheap" heads to run REALLY WELL?
Seriously!!!! People are looking to chince out on the most important part of their printer, give me a break man. Buy the real stuff and have a real tech instal it for you. GET A CLUE PEOPLE!!!