[If you think mains treatments are a load of crap then please just ignore] I was just wondering if there was any sort of consensus on the relative merits of using either HiFi mains leads or isolation transformers? I get the feeling that lot's of peoples first foray into the world of mains treatments is via some sort of mains lead, since as a one off purchase these can be got more cheaply. Is this the right starting point though? If you were looking to sort out your mains from scratch, which route would you take, or would it be a combination of the two?