I'm not absolutely sure of the size but I do want a reasonable sized one; I haven't got the space for anything too big though and I have to consider a number of things about position. I have looked on the internet at various garden supply websites but it hadn't occurred to me to look in farm supply catalogues so I'll do that. I'm not in a very sheltered position (I've already had problems with my new composting bins!) so I've been looking at the ones that sound like a rhinocerous. Anybody got one of those?