i spent the last year shooting documentary and wildlife with the ex3. i eventually got used to the design, shooting all day and into the evenings, but i always wished i had a shoulder mount.
i bought the hm700 a few weeks ago. despite the slight decrease in image quality compared to the ex3, the camera--for the price range--seemed superior in design and functionality. the media is far cheaper and the canon stock lens is sharp though not very wide.
but if resolution is really an issue, you can shoot straight to a nanoFlash on a cf card at about 100/mbs--this method should give you killer quality but at an added cost of 2k (still cheaper than a few sxs cards).
http://www.convergent-design.com/
because the ex3 uses a cmos chip you will find that image blur is bad and jumping will occur often while filming motion, or are in motion. the ccd chips do not have this problem.
also, be sure to tweek the picture/scene files before shooting with the hm700. it looks like dog doo out of the box.
