Getting Best Vocal harmonies out of Dp-008

[richard avena]

Hey folks. I have been using my Dp-008 to do my own demos which I like to add a lot of vocal harmony overdubs. I have been using the internal mic so far. Would I be able to get a better vocal harmony sound with an external mic than using the internal ones? Before I go out and by a decent mic, I thought i would see if anyone might give me some advice. thanks!