I signed up for Iberia Plus today to transfer AMEX Membership Rewards for a flight from Chicago to Madrid next April. Really surprised by how low the cost is in terms of points and cash. Already blown the business seats, and am having trouble figuring out the differences between blue, economy and premium economy. Have spent hours on this site and Iberia.com trying to figure this out and am having a tough time. All I want is non-stop flights with best access to exit row or better seats since I cant get business seats. Can someone explain to me what I need to do? Thanks so much!