I know this isn't really what you asked, you are more interested in buying a portable machine, but if you put your money where your mouth is normally between your nose on your chin ha ha, and add a couple of thousand to your top budget It has been known to buy a complete Truck mount and a van for around £5000, as long as you know what you are buying and preferably somebody with a sound business that is upgrading to new equipment you will probably do alright, you will find that if you concentrate on the carpet cleaning side rather than the general cleaning you will earn a lot more money and for a lot less effort So the extra couple of grand is neither here nor there (think about it)