AMB gets you $20 F&B credit at IC's, which is usually enough if you're travelling alone. The BOGO is always useful, I am saving $399+taxes and fees with mine this year (second night at IC SF.) And, the $200 annual fee gets you 10% rebate on all awards, which was worth over 30,000 points this year, not to mention the 15k for the sign up bonus. I wouldn't do the 40k points signup. Also, the one benefit I've enjoyed the most is it rolls over Spire for another year. I just renewed my AMB and my Spire rolled out to 12/31/20. 2019 i only had 8437 points and 24 nights towards requalification, as I had so many award nights, so not even close to the required levels.