The first printer we bought was a refirb one from a local engineer before buying new ones and we get our ink from him, the only one we cant get a this price is the light grey as they are always in high demand, this is why we tried a compatible but half way through the cart it leaked so it was looking like a new ISU was needed but my engineer gave me some invaluable advice on which parts to take out and how to fix the problem without the need for new part's, apparently it doesnt always work as the ink leaks over electrical connections and circuit boards. After this figured it's just not worth the risk, genuine all the way from now on.
Cheers for that.