If all your interested in is receiving miles for purchases what is the best card out there? My family and I are not big travelers. We take one vacation a year and every year we have such a hard time getting seats for all of us on one flight unless you hear "unless you upgrade". Frontier is pretty good United is horrible. We once went to Mexico using United miles, from Denver to Cancun. I went through Kansas City then Houston then Cancun. My son went through Phoenix then Cancun. The wife and daughter got lucky and went Denver to Cancun. And returning was worst. I have to take a different airlines to get back.