Best Line conditioner under $1000 used

I am moving into a smaller house. My exsisting house has a dedicated circuit for my system. I will need to use a power conditioner for a while at the new house. I say that without knowing. I assume I need a power conditioner at the new house. It is 100 years old. I guess I am asking what my choices are. Will I benefit from a line regulator/ power conditioner or something. I have been looking at the Monster AVS2000 sig series. Looks like a real nice product.
I have done some reading and find that these items tend to add a signature to the sound. Not to sure I am happy about that. Any input?
Thanks, Scott