I was going to go with Hilton until the devaluations came. The 3 nights at a Waldorf property would be nice. May just put 20K on it for that reason. I'm looking for mainly award stays, so the diamond status probably won't mean much with the devaluations.
The Capital One card could be an easy no fuss way to do things. I usually try to squeeze out a minimum of 2.5% out of my cards though.