If you like to travel I am still a big fan of:
http://www.capitalone.ca/credit-card...-travel-world/
As long as you use your reward miles strictly for travel related purchases over $600, it's the best bang for your buck with their reward miles.
I just recently bought a return ticket from Europe on it paid entirely with reward miles and it couldn't have been easier... especially after previously going through the hassle of redeeming Airmiles for a flight with terrible connections.