I'm just starting out with the miles/loyalty programs and building my credit card history. My goal is to generate points for international travel rewards (eg, airfare, hotels, car rentals etc). I currently have a chase freedom and in Jan I will be applying for CSP and Ink Bold. Once I have a longer credit history I would like to become an amex customer. The main reason is because I want to have an amex card and like their policies.

That being said I am trying to figure out which of their products would be in my best interest to target. I have been looking at the SPG (I am working on gold status with Hilton so haven't been staying at SPG, but the starpoints seem to have high transfer value to airlines) and the PRG. Given my investment in chase UR is there any card that would dovetail nicely with the cards I have/will have?