So... I ordered a jumbo #11 while ago. Received it, then kicked myself because I'd forgotten to order good memory cards!
I've shot a couple of test videos using an CL2 card from an old cellphone. Quality was decent, at long as there wasn't much movement in frame.
My new CL6 cards showed up today
I formatted both of them as FAT32 - one each with the previously-mentioned block sizes of 4096K and 32768K, as I'd like to see the actual quality and filesize differences.
BTW one of my cards came with a USB reader-dongle. I'm glad I formatted the cards with them in the dongle as opposed to in the camera, as they got quite hot during the process!
I also flashed the No Timestamp / Continuous Recording firmware. Followed Tom's instructions to the letter... no problems at all.
Hopefully we'll have some wind tomorrow. Looking forward to sticking it onto one of my slope planes !