Agreed about the few buggy elements. The last version had a bug with the cursor for about 6 months. Freya's still got the window focus bug that Ubuntu has had for years (haven't tried Loki yet). They're waiting for upstream fixes, but it does undermine the fundamental usability message of the distribution. If they do manage to grow to a major distribution, they really need to set aside a significant amount of money to sponsor upstream developers to fix these problems in weeks rather than months.