RE: Aurora 9 radio
Yes, it will be capable of downloading/uploading software and settings via the PC. You will need the new (not yet availble) HPP-22 as the interface. No memory card.
Any brand 2.4Ghz module will add latency as it is using the PPM interface. The Hitec 2.4Ghz module uses a digital interface so it will be the quickest.
4096 resolution with Hitec 2.4GHz. Update: Oops... I just found out it's 2048, not 4096. Sorry!
The Aurora will be compatible with Hitec QPCM and all brands FM receivers with the Spectra Pro module. Using the Hitec 2.4Ghz module it is compatible with Hitec 2.4Ghz receivers. There is just one version. I don't see why it's a con not having it only as a dedicated 2.4Ghz system other than not having the wire connecting the antenna. I think is more of a Pro having the system be capable of using multiple brands receivers/ modules instead of just one.
Yes, it uses 6 cells (7.2v) 1300mah Nimh. It can select Nicad/NimH or Li-Po with adjustable cut off (6v -7v.)
Mike.