My thanks to many of you.

First, thanks to the person who pointed out the Citi Dividend select card. You should get a premium from Citi! That is a lot smarter than using my United Miles Visa card for these purchases (even though I do a bit better than just a 1:1 redemption because I shop almost 100% at Safeway).

One thing I'll point out is that some of us cycle these cards to get the new card bonus. I'm not saying this is the easiest thing to do, you keep hassling with card cancellations, but I've racked up 45,000 in Delta miles doing this three times, and am getting ready to do this with my United Miles card.

With the Citi as my backup (for the wife mainly) why not?

And thanks to Marathon Man for pointing out the Amtrak rewards system. Fantastic! I feel like a food for converting CO miles to UA. I should have saved them for Amtrak. This program alone makes CO far more attractive.

One question: other than some of the third party services, is there a way to go backwards, from UA to Amtrak?

Thanks again!