I have the Vansevers Super Companion, I think it is around $150 new. Has digital and parallel filters, surge protection, 6 isolated outlets and a IEC. Does it make a difference? Not sure, didn't notice any change putting it in. However, they state that you notice such things more when you take out of your system than when you put in. I haven't taken it out yet.
I have my piece of mind anyway.
I have my piece of mind anyway.