I'll be playing with an HDMI cable only, no analog audio inputs. I was playing yesterday and there was no noticeable lag without calibrating.
Guitarcade is awesome- it's going to make practicing fun!
Very happy with the choice of Clapton songs. Nice to see another stones song as well although Play With Fire wouldn't be my first choice. Didn't really notice any other stand-outs from what we already knew. Thanks Cloud!