When you are browsing and comparing cards on the Citi site, they have a tool for seeing which card offers may be best for you and which you may be prequalified for. You enter info similar to card match tool and get back a set of offers. In addition to being "pre-qualified" for the Thank You Premier card, under additional offers, it showed a 50,000 point signup bonus offer for the Citi Prestige with the same $3,000 spending requirement as the standard 30,000 point bonus. I imagine YMMV, but I haven't seen any discussions of a 50,000 point offer for this card and the extra 20,000 points is significant when deciding if the $450 fee is worth it. Essentially having, at a minimum, $1,300 for AA tickets the first year makes it a no-brainer for me.