My question was "moderated" off another blog so perhaps I can ask it here. For the person solely interested in earning UA miles, isn't a UA Explorer or CO OnePass Plus card a better vehicle than the Sapphire Preferred because of the 10,000 mile bonus at the $25k spend threshold? From what I understand, if you accumulate 50,000 UR points by whatever means, you get a 7% bonus of 3500. But with the UA/CO cards you get a 10,000 mile bonus after $25k spend. That's a 40% bonus. Even if you spent $50k, that would still be a 20% bonus. I've read all the stuff about how to earn >1 UR point/$ with merchant & category bonuses, transferring points from the Freedom card, etc, etc. But as I see it, it's not until you've racked up 142,857 UR points per year (10,000/.07) that the Sapphire 7% bonus becomes advantageous. That's a lot of points to earn every year, even with all those bonuses. So for the UA miles earner, the airline cards seem a better deal than the Sapphire Preferred, right? Does that make sense or am I off somewhere? I know UR points can be transferred to many other partners and even other people, but I'm strictly making an apples-to-apples comparison regarding UA miles here. Appreciate your feedback.