It is like what, an extra couple of hundred bucks to get an F4? Actually I think from the top of my head a DR70D is $299, while a F4 has been on sale for $450?
That is a no brainer decision, it is like say if you could buy a C300mk1 for only a few hundred bucks more than a 5Dmk3, easy choice! (in reality I think a C300mk1 still goes for on ebay what, double the price or more?) Just to give a camera analogy.
As for the number of batteries, fairly irrelevant when nearly all pro sound operators are using external batteries anyway. Internal batteries are just there as an emergency back up, so a couple of hours or less of recording is plenty overkill. (and the F4 does much much better than that)
That is a no brainer decision, it is like say if you could buy a C300mk1 for only a few hundred bucks more than a 5Dmk3, easy choice! (in reality I think a C300mk1 still goes for on ebay what, double the price or more?) Just to give a camera analogy.
As for the number of batteries, fairly irrelevant when nearly all pro sound operators are using external batteries anyway. Internal batteries are just there as an emergency back up, so a couple of hours or less of recording is plenty overkill. (and the F4 does much much better than that)