Which is better choice?

[Michael]

If you were going to pick a credit card to fill in the 5% gas gap while AMEX Blue is still below the $6500 tier, would you choose a 3% card where you are surrounded by that particular brand of gas (Mobil), or a 5% card where the gas stations for another brand are not as frequent (Shell)?

P.S. I already have applied for Discover Gas, but I am going to let my wife use that becuase she can really blow through the $1200.

[creditqueen]

It all depends on which gas station you use, doesn't it? If you have already got the discover gas card, then that should work.

Why not give your wife the blue cash so she could "blow through" the $6,500 threshold more quickly! Then you keep the discover gas to use just for gas!