You've got an excellent pro DVcam. What a nice present. 😎
Since DV is purly digital, there's no difference in the final image quality output of all programs if you only want to capture, edit, and then export the videos back to DV tape.
However, if you'll be doing re-compression or conversion of the videos, say export them to DVD or VCD format, then the quality will be different among the programs.
Here are some great sites that might help you get started:
<A HREF="http://www.videoguys.com" target="_new">http://www.videoguys.com</A> for video editing solutions
<A HREF="http://www.vcdhelp.com" target="_new">http://www.vcdhelp.com</A> for making your own VCDs, SVCDs or DVDs
<A HREF="http://www.camcorderinfo.com" target="_new">http://www.camcorderinfo.com</A> for general topics on DV camcorder
Have fun.