Performance.

[DCW1000]

I also have been pleased with the reliability of the RS2 releases. I held back on the first two -- 14905 and 14913, if I recall, but I may have that wrong. Then I jumped in and have been riding up on the subsequent Fast Ring release versions with no problems big enough to make me want to roll back. My biggest happiness is that the Store apps tied to Fast Ring enrollment really seem to making progress toward enhanced capacity and smoother operation.