Power Cable or Power Conditioner?

There are some great recipes for power cords on the audio asylum website. For under $100 you can build a power cord that would cost considerably more. The major cost to you is time. It will probably take two hours to make your first cord.
The Harmonic Discord website has recipes also if you want to look around more.
I've used some of the less expensive power line conditioners and as a rule I think they get in the way of the music. The better ones (i.e. ps audio/tice) sound a lot better and actually work.
Good luck

I don't know where you live but in most places the power company doesn't consider voltage fluctuations of twenty volts to be excessive. Your equiment will work under these conditions but it will be handicapped by what's coming in the wall.
I know it's not what you want to hear but I think you will be much better off to bite the bullet and go for the ps audio P300. Regardless of what comes in the house the ps audio will constantly supply you with the power you need. I don't know enough about the Monster power conditioners. I looked at them once at a stereo shop but wasn't impressed by them or the salesman. I'm not sure the perform the same function.
Actually I built another power cord yesterday. I only needed a four footer and I calculated the cost to be about $46. I've seen and heard a lot of power cords and I know you would have to spend over $200 to better these cords.