hi dionysis, I m no expert but will try to answer u from the best of my knowledge. Anyone pls correct me if i am wrong.
yup, hdd is easy for post processing and editing.
most HDD cams compress video captured into MPEG-2 format, that is DVD type format. by using miniDV, video captured are at their truest form (highest quality). It is better to have uncompressed video so that the quality is not lost. now even High-Def footages can be captured into miniDV. you can change tapes while shooting but what if your HDD is spoilt?
miniDV takes a longer time to transfer from tape to PC. And it does take longer to burn raw footage into DVD as compared to an already compressed MPEG2 footage. miniDV takes a whole lot of space in your computer. 1hr of footage is around 13Gbs. A DVD, as we know, is only 4.7Gbs.
So it depends on what you need. Do you want to save time or quality? Do you want better control with raw footage or contented with compressed footage for easy burning to DVD?
whatever it is, dont go for DVD camcorders.