Hey Stephen,
Thanks for posting. I”ve been a Sony guy forever and had looked at all the various cameras shooting AVCHD at NAB last year. I really like the 160p, but have yet had time to really try it out on an actual shoot. I’ve been up to my ears trying to finishing lots of stuff already in the can.
I’m so sorry to hear about your issues. Our baby step into HD 5 years ago was with the Sony Z1U. I really didn’t like HDV, but it worked best in our workflow back then. We had major issues with the back focus on this camera as did a friend of ours.
Anyway, all that to say I have not actually done the firmware update on the 160. Was not aware that the firmware update actually added any features, but I would think the bitrate, as it’s still AVCHD, would all be the same. Sounds like you should look at the AVC Intra camcorders.