I love my magnaflow, got it for 575 shipped, paid another 80 shipped for my invidia test pipe. The magnaflow had a deeper louder sound without the test pipe and seemed to quiet down at higher revs, the test pipe didn't change the lower rev sound, nice deep and bearable, but in VTEC it sounds awesome! Loud and racey, but not buzzy in my ears.

Do a search on youtube and you can find pretty much any exhaust sound and video for the S2000.

I have only heard/seen the magnaflow (mine) in person.

 

not to downtalk your exhaust (cause i'm not really sure), but i've heard rumors that the magnaflow has bad quality.

 

I paid $600 shipped for my Invidia on a group buy. Six months later, I am still loving it.