I disagree with rock@rock.rock's answer. Editing suites -- at least the non-linear suites that are generally used today -- are not "built" around any particular tape format, but around an NTSC signal.(posted 9300 days ago)The DV format -- particularly via the higher-end DV cameras -- can provide a very good NTSC signal, quite comparable to Beta SP.
Providing you have a good DP, your results will probably not be all that different whether you shoot on Betacam or DV. The main difference is that you can probably afford to own a DV camera, and you probably can't afford to own a Beta camera.