LOL.. not sure about DC exhausts but DC is NOT good stuff.
They make tie bars you can bend with your bare hands and SS headers that rust within months.

Generally an exhaust is an exhaust.
Mugen will give you a nice sound.. not really loud, close to stock.
Will be good for long drives etc (I can barely use my cell phone in my integra w/ skunk2 exhust - N1 copy).
Mugen exhaust is 1000 though.

spoon exhausts sound loud and annoying

thermal exhausts also give a unique sound that is not too loud

My favorite is my tanabe Gpower on my prelude.. not too loud most of the time-but very deep, and screams in Vtec.

its your decision.. i'd suggest you find out where your 'honda racers' hang out in town and try to hear as many different exhausts as possible, and choose the one you like. Don't worry about what your buddy or some jackoff on a webboard tells you.