Hey guys, how is this in terms of responsiveness? Managed to ruin my Lumia 800 and considering hopping to Android as a stop gap with a Nexus 7 and one of these until the new phones come out. My only worry is my mum has an Xperia X10 which has the same processor as this if I'm right, and it's sluggish as hell every time I see her use it. I realise this might be her being awful at task management and the phone being old, but it's still scarily bad compared to my Lumia 800. If it's easy to get it really sluggish I might just get a lumia 710 and wait for the next round of phones