For my 2014 Asia trip, I decided to apply for a Chase Sapphire Preferred (CSP) card. I looked around and apparently, CSP is one of the best travel credit cards you can get. There are no international fees and you get double points when traveling and eating at restaurants.
This is on top of the usual 1pt per dollar that most credit cards offer.
I was also given a 40,000 reward pt bonus and an additional 5000pt after adding an authorized user.
All in all, it's a nice credit card.
I also learned about churning but was not too interested in actually doing it. It's an interesting concept that really takes advantage of signup pts.