After looking on Detailing World for reviews on the nilfisks actually found that some people have been disappointed...fair enough they have the metal pumps instead of plastic like the Karchers but for the cheaper models, ost say they aren't they much better than the Karchers.
Was set to order a C120 though ended up going on Karcher Outlet and getting a K3 series with all the tools for £109.....
Whatever one you plump for KEEP THE RECEIPT.......always packs up if you lose the receipt...sods law
And stick you accessories for the Karcher on ebay.....the patio cleaner, dirtblaster and gun could make you £50...might allow for a more expensive replacement.