The Amex Platinum is what you're getting mailers for.
DON'T take the 60k MR points offer! It's the same as the public offer that you can get just by applying on the website. Since Amex signup bonuses are generally once per lifetime, you should never settle for a lower public offer unless you really need the card benefits. There are lots of DPs from people who were successful in triggering a 75k or 100k offer using various tricks. Recently, DoC posted a rundown of the personal and biz Platinums and how to get higher offers for them:
http://www.doctorofcredit.com/get-1...usiness-american-express-platinum-cards-ymmv/.
Amex recently raised the AF on the personal Platinum to $550, which is a hefty AF any way you look at it. It's partially offset by a $200 airline fee credit (which is not as flexible as the CSR's travel credit), which a lot of people have had success redeeming for gift cards to certain airlines. When Amex raised the AF by $100, they also added a $200 Uber credit (parsed out over the year at $15/month and $20 more in December), which I just use every month for UberEATS. My wife uses the Centurion Lounge access benefit when traveling frequently, which is much nicer than most Priority Pass Lounges, but there is no Centurion Lounge in DEN so that won't be of much use to you. Amex also includes Priority Pass Lounge access, but you already get that with the CSR and CSR's pass is much more generous (unlimited guests vs. Amex's two guests limit). The Platinum also includes automatic Hilton and SPG/Marriott Gold status upgrades, which is nice since we tend to stay with these chains when we travel. There's also a fee credit for TSA Precheck and Global Entry, but again, you already get that with the CSR. Still, I'm finding a lot of value in my personal Platinum and will probably keep it despite the fee (but not before asking for a retention offer).
All that said, in terms of Amex Offers, I find that I've gotten more and better offers from my Premier Rewards Gold. I've gotten useful offers that I've used for gift cards for
Best Buy, Home Depot, Lowe's, Staples, Jo-Ann's, CVS, and now
Walmart and Jet, but not the really good Target offer about a year or two ago. I know some really good Staples, OM/OD, Home Depot, and Lowe's offers seem to go only to biz cards. I don't know that there's any method to targeted offers. FrequentMiler recently posted a blog that basically recommended to get every
type of Amex card (personal and biz, MR and non-MR) and lots of Amex cards to improve your odds of getting all the offers:
http://frequentmiler.boardingarea.com/2017/05/16/amex-offers/.