I also use my AMX Blue Cash card almost exclusively.
It pays you back 6% on all grocery stores and drug stores.
It pays you back 3% on all gasoline/diesel purchases.
So, I charge all my groceries and fuel.
Occasionally, there are certain mom & pop restaurants that do not take it. Then I use a Mastercard that also gives me cash back.
The only other credit cards I use are Lowes(5%) off all purchases and Hone Depot. HD sends me coupons for $15 off if I charge $100. That is the only time I use it.
You get this credited back to your account monthly. I just call up and they apply the credit to next months balance.
I pay off credit cards every month. Never carry a balance.
Twice in the last ten years my AMX number has been stolen.
Each time I was informed in an email by AMX. The sent me a new card the next day. I am pretty sure it was a Thai restaurant the first time. The illegal charge was in Bangkok.
I have the Blue card but never used it. I'll have to flesh that out. Thanks. The only charges on that Blue card have been the yearly card fee.