I would get the card that suits your long-term spending best.
When it comes to mortgages, having an internal account doesn't make much difference like it would in other types of lending since mortgages are all so strict with criteria and a long term risk.
All that to say I personally have the More Rewards AMEX from NFCU and love the card. Between that and my PenFed Power Cash Rewards, they're my #1 and #2 used cards.
Best of luck!
They're very different cards. Without knowing anything about your spending beyond "moderate Amazon shopping," there's really no way to say which is better for you. For Amazon and Whole Foods purchases, the Amazon card will be significantly more rewarding and slightly more on drugstores. The NFCU card will be better on travel, gas, restaurants, and supermarkets. Both are lackluster for non-category spending.
Do keep in mind that with the higher signup bonus of the NFCU card, it would take over $2000 in Amazon and Whole Foods purchases on the Amazon card just to earn that extra $100 and break even to what you would have on the NFCU card, and even more depending on how much of that was at Whole Foods since you would still be earning 3x.
I agree with needing more info, specifically your 5/24 and time frame on the house.
If you can meet the SUB for NFCU outside of Amazon purchases, AND your stats support 2 pulls/applications, then I would do the chase first (5/24) then the NFCU.
I have both, and loved both when I daily drove both. But after this AMEX gold, I'll probably daily my CFU for everything not grocery/eating out.
Again, if a house is in the near future (dare I say 2 years), I would do none. Pay down anything for better stats, save cash for a down payment or set it aside to hit the SUB after closing, whatever. But I'd wait if a house is within 2 yrs.
