Since any new laptop is going to come with a power cord, I don't understand your point about power cords.
Any particular reason you've mentioned those two models? Or, is it actually three models? You say HP DV 600 or 6000, so does that mean DV600 or DV6000, two different models? By the way, I found neither DV600 nor DV6000 or newegg.com, a major online seller in the U.S.