Agreed value or stated value for collector car insurance.

Just like the title says.

Do I want Agreed value or Stated value on a collector car policy.
Starting up our new car insurance for Oregon now that our move is complete.
We have AAA but I've only had liability insurance on it till now. Just need to know which is better. In the quote she gave us it shows "agreed" value of 25k, but in her latest email she's saying it's stated, I just need to know the difference so I can pin her down on it.
Thanks