Dan,
What is the difference between the gold card that gives 25k (that seems to be dead according to the main site) and the gold card that offers 15k but seems to yield 30k?
Are they the same card but different links being used to apply? Which ones are still available?
It's the same card, different offers.
When the card first came out the offer was 15K, but yielded 30K for everyone after spending $1,000.
Then there was a 25K offer for a limited time.
Now it's back to 15K, but it's very possible that really that will yield 30K again.