Just acquired the base 15" from the Apple Store and am very happy with it so far. One thing I notice is that the fans run a tiny bit louder than the one(s) on my mid-2014 15" MBP. It's not a massive issue, but I work in a quiet room much of the time and am sensitive to sound. It feels a bit like a step back in time to having a spinning drive humming at all times. Wonder if there is a fan control app or setting and if so is it a good idea to use it--even to crank it down just a bit? My usage: purely email, surfing, Word, and PP. (Why did I buy this, then? Cuz it's beautiful! Topic for another post...) A second possibility I haven't ruled out is that the machine is indexing in the background, given that I've had it for only two days. I doubt this, but I don't know how to figure it out. Thanks!