If you can better define what would make it "worth" it to you, perhaps folks can offer some relevant comments.
There are lots of discussions here about AA domestic service in all cabins. The FAQ might be a good place to start for basic information since much of this has already been addressed and can be found in the links there.
Cheers.
Thanks. I guess my top criteria include ease of transfer in JFK, minimal delays, and whether JFK-SFO is essentially like traveling in international business (or close to it)...