Those kind of scents that delight your nostrils without being overpowering and just smell amazingly fresh ?? Lots of posh hotels in the States have this. Think Cosmopolitan Las Vegas, Four Seasons, Mandarin and also the W brand from Starwood. Has anyone invested a few hundred quid in one of those proper difuse / scent machines ? Any recommendations ? I know they sound expensive, but adding up the amount I spend on candles and reeds its not really !