Looks like there are two poles so far, around 3 and 7. Personally I gave it a 7.
On the plus side:
- There are regular updates.
- The updates add genuine new features and improvements.
- It's possible to go back to any previous firmware release.
On the minus side:
- There's too much pointless fiddling with a UI that should be stable, and not enough fixing bugs
- It's annoying not to be able to turn off auto-updates when you sync other content
I think it balances more plus than minus.