Peru/Ron,
There is a definite quantitative quality difference between the HV30 and Nex5N I have. Having said that most DSLRs have larger sensors and lenses than the HV30 so are likely to produce "better" images - even at the same video quality. The smaller depth of field of the lens means I think it is different rather than better. Different all the time - better some of the time. I understand that if you were to move to a modern AVCHD camcorder (like the Panasonic X920) there would be a significant jump in image quality from the HV30.