JXD is fine. Use the SD card instead of the onboard, as the onboard memory is not too quick and will glitch every now and then. this seems to clear up when using a decent make sd card.
http://www.youtube.com/watch?v=Nfy3dut4Po8
this was one of mine, taken on a JXD to the onboard memory. That was with a cheap 380line camera, i was quite pleased with the results, but then when u look at my other video's, you can see the difference in quality (using a 550line cam)
I smashed that recorder up in the crash in that video. The screen broke. But, the footage was still saved on the device and i was able to retieve it ok.