I tend to shuffle between brands (SPG/Marriott/Hilton) depending on the availability of hotels in the area Im visiting and the best value I can get for points. I rarely have paid nights, so the biggest benefit I tend to cherish is the free breakfast and suite upgrades that comes with platinum.

As "MCGAHAT" correctly noted, I dont want to reach my pockets for $800plus tax of unused meeting rooms since reaching the 75K limit is not an issue for me. But the "cost" of platinum status for both Marriott and SPG, per se, is 150,000 Marriott points (or 50,000 SPG points), plus $450 annual fee, is that a fair trade?