I am CO Gold. Fly about 50-60K base miles a year.I am Marriott Platinum and use this program way more than I fly...actually stayed 195 nights last year! I also wrote to Starwood with my Marriott statement and they elevated me to Platinum immediately.MY QUESTION: Since I don't fly a ton of base miles..is it wise to switch my Marriott preference to MILES instead of POINTS at some point in time?? If so...when??