Thanks Anthony. I sent an email to Nathan. He also recommended the 18.0c and said it should be quite close, but the 18.0 should eclipse the Sub25 in terms of bass output and depth. I think the 18.0 is definitely outside my price. The 18.0c definietly looks like one hell of a contender. Problem is that I live in South Africa, so I need to factor in shipping to. I don't see the weight on the 18.0c. In fact I am scared to think how much it weighs!