In reply to Noam Osband's post on Sun 25 Apr 2010 :
Noam, my advice is to save your money until you are ready to make the big purchase. The technology landscape is changing so rapidly that postponing your purchase for 2-3 years until you need the gear will save you money and buy you significantly more product when you are finally ready to spend. If you must get your hands on something now I would suggest one of two routes.
(1) Get the Canon Rebel DSLR (T1I), and a decent lens or two for it, and start getting comfortable with the format and the shortcomings. That's what I would do if that money was burning a hole in my pocket. Then in a couple of years you can upgrade to the best bang for your buck equivalent to the 1D/5D/7D and you'll already be comfortable with the format and have lenses that fit your upgrade. You will not go wrong with DSLR as a format choice. The adoption rate there with filmmakers is phenomenal.
(2) Alternately, go low end and get a flip HD camera. It is small, cheap, and gives decent enough output. The advantages are that you are more likely to carry it with you, and it would not be obtrusive when you do break it out. This would allow you to cheaply spend the next couple of years getting comfortable busting out your video camera and thinking about shooting always. In my opinion, documentary is as much about the quality of the equipment as it is about the visual eye of the cinematographer and just being there with a camera shooting. This would allow you to spend a few years learning on the cheap and developing a visual eye, so when you are ready to spend more bucks you have developed a better sense of what your priorities are.
Also don't neglect sound in your budget. You'll need an external sound recorder and higher end mics, which means less to spend on a camera. If you did end up spending $10k on a setup, I'd recommend 60:40 ratio of spend on video to audio at least. Audio is far too neglected by new filmmakers, and it's at least half of your presentation in a film.