I recently bought the Karcher K5.70 including Patio Cleaner from Costco
for around £200 (including use of a £50 off voucher).
I am really happy with it, Good power and handy wind away hose.

See pic:-

http://direct.tesco.com/product/images/?R=207-1828 2013 Discovery HSE Luxury - 3.0 SDV6 - Santorini Black
2013 Evoque 5 Door Pure Tech SD4 - Orkney Grey with Panoramic Roof (Mrs E's new baby)

GONE - RRS - 3.0 TDV6 HSE - Santorini (2010)
GONE - RRS - 2.7 TDV6 HSE - Java Black (2007)
GONE - Porsche Boxster S - 3.2 - Black

Pressure washers, in an odd but similar way to vacuum cleaners , are difficult to compare spec for spec. As there are so many factors to consider HP, flow rate, PSI etc etc.

This is a really good link to find a calculation to level the playing field with regards to true performance. Cleaning power.

http://www.diyfaq.org.uk/electrical/pressure_washer_faq.htm

I bought a Karcher petrol one and it is really good.

Just one thing to remember, all the cleaning power comes from the pressure and flow. The detergent (unless pre applied) does NOTHING. It just makes you feel good seeing all the soapy water. All detergents, unless super agressive (which would destroy the paint first) need a level of dwell time to break the grease and grime down first. Pre-spraying the car with detergent and then jetting it away is perfect

ps, I used to work for a large chemical company in the UK who made many of the Karcher (& Nilfisk) chemicals so I have been in the lab with the chemists and seen the research myself!!!!

Had this one for 2 years without a problem. Probably a bit old in the tooth now but looks like its still available

http://www.argos.co.uk/webapp/wcs/stores/s...++++++++++ MY10 TDV6 HSE, Alaska White, Ebony with Contrast, Park Heat, Paddle Shift, Privacy, Heated Steering Wheel, Extended & Premium Leather,

MY07 TDV6 HSE, Zermatt Silver, Gone

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1964 Austin Healey 3000

2007 LR Defender

2011 VW Tiguan R Line

I bought this one.
Nice discount.
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewIt...Track=true 2010 TDV6 3.0 HSE Santorini Black Tan Full Leather