I'd be inclined to say either Elevate (if you think you can get a modest pile built up before the merger) or KrisFlyer as well. I've been shunting most of my non-VX earning away from Elevate and to KrisFlyer (I've only used the CC once in the last few months and that was because the insurance agent I was talking with basically went too fast with the transaction and ran it before I could tell him to hold on and put it on a different card).