I've been Emailing Sony customer support about the "+" format anamorphic (16:9) problem on the 910. I specifically asked when a firmware update would become available to fix the bug. Here's what they had to say about it...
"Our understanding is that due to the limitations of a + format disc, they are unable to record 16:9 signal formats. There is no problem with the unit as such as this was the way the unit has been designed and there would be no firmware being released for this."
Since Panasonic and others seem to manage it, at least that's what the reviewers tell us, I think that this response is just so much bovine manure.
So, I'm still waiting for a DVD recorder with HDMI, 160+G, freeview, "+" and "-" support with D/L on at least one format. On paper the 910 was ideal for my needs. If anyone knows a competitor model that matches the spec of the 910 please let me know.