In reply to davidbirtles: I've used one for the last 3 years and it has taken no end of abuse and it's still in great nick. I do mean abuse aswell, it's gets used 3 times a week at the wall over winter and in summer it gets dragged through puddles, grit and no end of sheep sh*t.
It's so good I've even got another stashed in the cupboard for when I retire this one next year.