As for the X2... I had one and returned it within the first week. The touch screen kept lagging and became unresponsive several times. Its a nice piece of hardware with some really notable features, but I just think that clover trail can't really handle everything yet. Oh yea... I forgot to mention my biggest quam about this tablet... youtube lagged really really really badly... My Surface RT lagged less, maybe bc the tegra 4 has a better graphics chip?