Well, I love the Lenovo Yoga Tablet 1, and it was battery life that decided it for me, the lack of power / res, not such a huge problem as the only tablet type games I play are Bejewelled and Mahjong - books on my kindle, music on my phone. GBs of graphic novels (on the SD), bedroom TV and surfing are the reason d'etre for me having a tablet and it functions perfectly, but this looks a good upgrade (more battery and better resolution).
Pro consumer tip: Buy em from John Lewis, same price as everywhere else and two year warranty as standard.