I have the N1 on my 95 GSR. It sounds like a smooth hummmmmmm. Its not raspy. It was loud as hell until i put a resenator in the pipe. After that it sounded really good. Also they sell a silencer for it. When i put it in it quiets it to a real low pitch.
I had the Tanabe Racing Medallion with the silencer on and it was too loud for me....I sold it to my friend with a 96 GS-r and he modified the piping and it's not as loud as my car. Very different sounds between GSR and Type R
a resonator is that fat part of the pipe thats in your exhaust , its to hard to explain in technical terms, what it does is takes the raspiness out of your exh. note. for example after you put a header on your car or a test pipe you get that extra twang that can start around 3500 rpms or so, well it takes that sound out and gives it a mellow sound. in laymans terms.