personally for a planned project I’ll be using a Canon HD for the main shots and a few SD cams
for fills and angles, SD cams (miniDV) are so cheap now you can mount them on microphone stands and just let them run on their own for a scene then edit the footage in After Effects to be mixed with the HD footage.
A good Canon pro HD (XL series) costs about 2000 euros in New York these days.
As stated above there is really no reason to use 35 or 16 mm anymore, they are just too dear
to play with (try and get some 16mm footage processed and you’ll see what I mean).
Then again there are HD cameras and there are HD cameras the HD format is still being
developed, you want a frame rate of 60 for fast stuff but most of the cameras do this interlaced and not progressive.