Mine was getting 45/46mpg pretty consistently and this last two tanks have been creeping up with my last being 51 mpg. I just hit 1800 miles on it and I have not been quite as sedate with my riding.
It'd be nice to see mpg around the low 50s.
You know, my 1100 ACE I had didn't even get broken in and running good till it got 20,000 miles on it.