The MS Nashville store opened yesterday and I went to the event, somewhat expecting to pick up an X3 to replace my iPhone 6 plus. I didn't end up doing so because the display model was terrible - it was slow, continuum was laggy and froze several times, and the unit felt too light.My wife has a 950XL and it is awesome. Great weight, nice continuum performance, plenty of horsepower, etc. Given the spec bump, I was expecting the X3 to at least be comparable, but I was sadly let down.My thought was that the model they had on display might be an older firmware or OS version. I asked a MS employee about it and he said that it's a demo unit so they probably don't patch them regularly. This is unacceptable in a store environment - how can they sell the 'one device for all needs' experience with a unit like that?Anyway, now I'm hoping that the 950XL goes on sale this holiday season.