DVCpro50 would be a better cleaner choice than DV. It maintains your 4:2:2 color space (which is better for color correction, compositing, green screen, etc) rather than DVs 4:1:1 color space. DVCpro50 will take about twice as much hard drive space as DV does, but 1/3 the space of uncompressed 8bit. FYI DV is 3.4 MB/s, DVCpro50 is 7.0 MB/s, and uncompressed 8bit is 20 MB/s.
hope this helps,
Bru