I think I am going to buy a Toro 20637 48cm Self Drive Mower (WITH FREE SERVICE KIT) for £250   Has anyone used one of these - It has a Briggs and Stratton quantum 650 engine, but I have   noticed that a Toro engine can be bought at for approx an extra £100, but not from the link below,  Is this worth considering or not.    http://www.abbeygardensales.co.uk/subprod/toro-petrol-mowers-0003529.aspx