Just a quick FYI:

Hard-drive based Camcorders are a bad idea, as most of them are not
qualified for use above 10,000' MSL (thanks to Kempton Izuno for
pointing this out and saving me some $$)... The problem is the
cushion of air that the hard drive read/write heads float on, above/
beside the platters... as air density goes down these things become
more susceptible to striking the spinning hard drive platters - not a
good thing!

--Noel