I found mine (197) to be a little worse than standard, more so when cold. But I never really just floor it from ~2,000RPM anyway so it never bothered me to be honest. It really makes a huge difference to the noise, gives the car that little bit more character (if it needed it). I only went down the K-Tec route that I now have because I got offered the lot at a really good price, otherwise I'd have kept it with just the centre silencer removed.
Here's how mine sounded as a comparrison, slightly deeper than Deakos;
[YOUTUBE]http://www.youtube.com/watch?v=X065zVA55Fw[/YOUTUBE]