I stopped at BRU tonight!
They had the new 65 lb Alpha Omega there, as well as the Aquos and the Easy Fit. The lady said the Pria had come in a few hours earlier but wasn't up yet.
She loaned me a tape measure so I took a few measurements. I didn't write anything down, and I didn't take
complete measurements. I had my baby with me and she was busy making messy diapers for me to clean up in the mommy's room.
Anyway, I measured the AO top harness height at 17" or so. The top harness height on both the Aquos and the Easy Fit were roughly 16". I didn't measure the lowest position on either one. I could see that the bottom slots on the Easy Fit were in no way appropriate for a newborn. I did not move the harness on the Aquos down to the lowest position to evaluate how low it went.
The level line on the side of all three seats appears to still put the seats at a pretty steep (~45 degree) recline. Not quite as bad as my CA (brief digression: I'm beginning to think that some CAs actually recline further than others; mine reclines to 53 degrees if the line is level). I played with the My Ride briefly while I was there, and was shocked at how much more upright the ball-level put the seat at for rear facing.