I love that this card offers purchase eraser. Using purchase eraser you can buy anything related to travel using this card and then use the miles you have earned to turn around and pay off the travel expense within 90 days. The card automatically shows you what is a valid travel purchase and allows you to click redeem. Then voila! Within 3 business days, you have yourself a credit on your account. The customer service is excellent, and I get alerts on my phone whenever a purchase is made. (Completely customizable in the settings).
I also love that it is Visa and is accepted most places. It is a heavy metal card, so no worries about it breaking down from everyday swiping, and the number is on the back, so not easily seen by prying eyes. I get 2 times miles on any purchase, and they add up quickly with a family of three.
The only negative thing I will say is that it comes with a 24% APR, so if you get this, plan on paying it off every month so you don't need to pay the ridiculously high interest rate.