I like them. Not really louder than stock, but definetly deeper. Don't purchase these things and expect a HP increase. I did before and after dynos and gained NOTHING. I guess a good thing though is I didn't loose anything either.
I am very happy with my Millteks and would recommend them to anyone. They are not as loud as many others (e.g. Kelleners) but if you want a gorgeous looking exhaust that you can live with every day then you can't go wrong with these.