A picture tells a thousand words. Bought a high pressure hose the other day and tested it on my new apartment’s stained concrete floor. See the results for yourself.
Bought the Gerni over the Karcher as you get more for your buck (ie. higher PSI and the connectors are made of steel). For more information on Gerni click here. This time round I didn’t do a lot of research however so far I am happy with the results.