u/iDomoPR

I already have the original Flagship card from Navy Federal*, but I'm looking for a rewards card with no annual fee. Between the two, which one is better? This is going to be my second credit card, and I'm not sure which one to select. I'm going to travel in a month, so having a 15-month 0% APR (Chase freedom) period sounds great, but I would like to choose the best option for the long term. I had heard too that having cards with different banks its better so thats other reason why im thinking which one to select.*