Best ride on mower
 

I have about 1.25 acres of lawn to cut at my new home. Spring is a way off yet, but would like to plan on buying a good second hand ride on lawnmower. Does anyone have any to recomend? Flicking through ebay seems to have several Lawnflite and Countax models. Realise, like anything condition will vary, but what age and size/model in either range might I get for say £750.