In general, luxury is not in mega-chain Marriott's dna. But there are some real gems to be found. Ritz-Carlton seems to strive for more staid traditional luxury while St. Regis can at times be a little more contemporary in the way they provide luxury. I would hardy ever consider JW a luxury brand, just a glorified Marriott. Some of the former SPG Luxury Collections are indeed luxury, but I'd say they are also often historical properties which can lead to challenges in terms of renovated accommodations, but overall I really like most of the Luxury Collection properties that I've stayed. I do think Edition is striving for a modern luxury as are some W resorts.