I would say that Leopard's would be busier than Silver's, comparable to Cheetah's but it's bigger. Silver's is a little more out of the way and more of a "neighbourhood" strip club if that's possible. I'm sure Studio 4 is busy as well. Any others just aren't worth going to IMHO.
I would concur with the London selection and would stay in London rather than bothering with Windsor unless you want to pay for air dances. Not to mention the drunken American 19 year olds (I'm sure there are a few drunken Canadians too).