I use AQ Tornado High-Current and Source Power Cables for my main amp and preamp. I use the AQ Niagara 1200 for my power conditioner. I am extremely pleased with the performance. In fact, I use AQ connecting signal cables throughout my system as well (Earth signal cables). I swear by the AQ line of products. There are a number of great products on the market and you really can't go wrong with any of them. AQ satisfies me very well and I believe in their proven research, so that will be my recommendation. We all have our reasons and you will have to make yours. I'm just glad to offer my very good experience with a great brand. I strongly suggest that you do the research on the brands by reading their technical information. You will learn (as I did) about the materials they use and, more importantly, why they choose those particular materials for the application. That is how I landed on my decision to use AQ throughout my system. I hope this helps you.