Is a high priced Line Conditioner needed


I have 2 dedicated power lines coming in to my wall for my stereo.Do I need a high priced Line Conditioner to make my system sound better and or safe or will a small priced Monster do the trick?Why waste money on a High priced Conditioner for a dedicated line?Thanks for your help!
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Update...went with a new Bybee Stealth (latest revisions) with a combination of Furutech Gold and Rhodium outlets early last week. I had the good fortune of picking up a fully broken in version that had been with reviewer until the week prior on a prior reserve order. The PP is gone and won't be coming back; I am ecstatic and blown away by what the Stealth is doing for my system, better imaging, even quieter and more black backgrounds, increased precision coupled with naturalness of images, instruments and voices,....this unit is beyond my expectations and is without a doubt the best I've had in my system........
I had the Stealth and changed it for the Holographic strictly for the better. After that I connected a AC Module in the amps fearing it to be too much of a good thing...and I made another jump in quality.... These things are incredible
On my system and in my room it was crystal clear. Evident in the first seconds. I didn't wait too much of the AC Modules in addition to the Holographic and I was astonished by what they did to musical event. These AC modules surprised me a lot. I precise that I'm not a Bybee inconditionnal or fanatic but these ac products work great for me.

Barba
I have 3 dedicated 10 gauge lines for my 2 channel audio system. Honestly thought that was all I needed. Sound was great. Living in Florida, the lightening storms come just about every day this time of year so I sought out a surge protector to protect my equipment and ended up with a PS Audio P-10. Surprised the heck out of me to say the least. With the P-10 in place, I learned that my power varies from 116.5 to 122 volts in any given day which the P-10 corrects to 120V steadily. Also the THD coming in on the line is as high as 4.1 which the conditioner corrects to .01. All of this plus surge protection and EXCELLENT sound sold me on this product.