I vote for the EX-1, I've used an EX-3 and the JVC you are talking about, and I like the format of the media and form factor of the Sony EX series better than a big ENG like JVC camera.

I like the new JVC GY-HM700 because the media is not as expensive has the SxS cards. A 32GB SxS cards runs around $800 dollars. You will need at least 2 cards. The cards for the JVC HM700 are less than $100 for a 32GB card. Chris does have a point in that EX1 does not have that ENG feel to it.

Ya, I forgot about how expensive the cards are. Brian makes a good point.