Not to good news from my F70, installed March 2013.
- In italian summer heat, the front unit mounting plate came off the windscreen sometimes. The biadhesive of the permanent mount plate seems to be of bad quality. I`ll try to get some industrial quality 3M tape.
- It came quite loose on its mount. Probably the different plastics have different characteristics while heating up, so it rattles a bit.
- Worse: two weeks ago, I wanted to archive the footage of an incident, only to realize that the camera has stopped writing to SD-card some days before. The card was a 16GB Samsung class 6, bought at the same time as the camera itself.
Further investigations: the card doesn`t accept any write operations any more, nor video footage, nor creating an empty file with my PC, nor formatting. Lots of I/O errors in my log files. The camera seems to have killed the card. Estimated operating time about 250 hours, one minute files, two-channel.
- Worst: the camera does not complain about anything, not even when trying to format the card in the camera. It simply pretends to register, while it really doesn`t. Apparently, it has no error handling routines at all. This is really bad, as you never really know if it is still registering or not. A serious camera would have optical and/or (better) acoustical warnings when unable to finish writing operations. What does it have a loudspeaker for? Only for the annoying startup and shutdown sounds???
If you want to rely on your F70, you should check the files regularily, and maybe replace the card every year or so.
- Good: tried an older 16GB Samsung class 4 card while waiting for the new 32GB Samsung Class 6, both seem to be working good without any problems, always dual channel.
Personally, I am looking forward to find a new dual channel camera some day, preferably with a separate main unit, close to the power source to avoid voltage drop and clutter on the windscreen, and featuring recording on HDD instead of flash memory.