Thanks for your reply guys. I have flown (briefly) the mSR indoors - and I must admit it handles very differently to the MCP X. (In that the MCP X is much more 'slippery' - goes much faster.
That's why I was looking for some input as to the comparision between the MCP X and the Nano CP X. As far as handling - I'm wondering is it closer to the MCP X, or closer to the mSR when it comes to speed and maneuverability. Just some form of guide to give he a hint as to whether it might be suitable for me as an indoors (livingroom) helicopter.