I have the current issue of Bluff right now and while it is a decent magazine it has about half the content that CardPlayer does and by no means has the in depth, high level of thinking articles on poker theory that CardPlayer does, IMO. Again Bluff is good, but CardPlayer is awesome. Just my 2 cents, feel free to disagree.
Funny, I just reread the OP's comments and we described each magazine exactly opposite of each other.lol To each his own!