I bought an IceToolz one from Evans last week. It's brilliant! A knurled rim makes initial tightening a breeze , and then a last tweek with an 8mm allen key.
I don't usually shop in Evans, but it was Sunday, and it's fun to see which lookey likeys they have working there.
At the moment it's the Bozo Griffen boy from Family Guy, and Gaylord Fokker's lovechild.