Great work, although looking at them all together like that, Microsoft's 1985 logo appears to be the best of the bunch. I suppose design is cyclical. I really

Great work, although looking at them all together like that, Microsoft's 1985 logo appears to be the best of the bunch. I suppose design is cyclical. I really like the "slate" concept, I'm just not sure it works as a button. Buttons should have roughly equal height and width. The slate looks very out of place on the physical devices themselves. Otherwise, it's great.