Is a high priced Line Conditioner needed

In my opinion, one has to try and experiment with power conditioners to determine which is best suited for their system, their tastes and which components to use conditioning on.
With that said I agree with the comment Nonoise made on 09-21-13: regarding the Blue Circle PLC 2X Thingee. Or you might want to try the new and improved PLC (Powerline conditioner) Thingee FX2 X0e, in a 4 or 6 outlet availability. I have experimented with these units and there is a lot of bang for the buck without spending huge dollars.
If you do want to spend big bucks, take a look at the Bybee, Equi=Tech balanced power or the Dmitri conditioners.

The Furman Elite 15DMi doesn't change the voltage. It linearly filters and monitors voltage.It will shut the outlets down if voltage exceeds 140V or 85V.

Thanks for that input, A$280.

A line conditioer or 2 will treble you enjoyment. Is it worth it to you