So we already have the chase sapphire and love it, however due to the fact I took a huge pay cut when I changed jobs and my wife needs $3000 in dental work, I was thinking of getting another card. We actually have plenty to choose from in our house already BUT we are going on a cruise next year from DBX to FCO and we were thinking of getting a UAL or AA card since we would be flying in and out of ORD most likely.

Are either of these better than the other? We had a US Airways card and trying to use the miles was like pulling teeth so we no longer have that one. Are these 2 similar, is it hard to use the miles? If so any suggestions would be welcome!