I currently use an Amex Platinum as my primary card, but I'm looking to switch as I will be significantly increasing the amounts I will be charging and would like to optimize the miles/rewards. I will be charging approximately 150-160k on the card in the next year. The largest portion of that, by far, will be my rent, so that won't fit in any bonus category. I am also looking to use one card only, even though I could accrue more miles using different cards for different purchases.
As for usage, I would want to use miles for hotel stays and air travel - mostly short domestic flights, but also longer international flights or upgrades on international flights on occasion.
I am thinking of SPG, Amex Premier Gold, or one of the Chase Ink cards, but am very interested in what people think would be my best option.
Thanks!
Ari