Thailand - Best Marriott in Phuket

I am going to Phuket in Feb and want to stay at a Marriott using points. I am guessing the best are one of the JWs, Either the JW Phuket Resort and Spa or the JW Khao Lak Resort and Spa. I am open to other suggestions as well. I am going with my wife and we want to be able to do the spa and beached and experience what there is to see as well.

Any help is appreciated.