The SX900 has done two things for me.
It woke me up from the slumber of being too comfortable with the S970 and taking it for granted.
and
has given me a challenge, discovering the new features, some refreshing styles and voices.... and the anticipation of looking forward to getting the main tweaking done to the point I will feel confident with it on a gig.

Now, if only I could stop touching the screen of the S970.

Eddie