Get the 'Singtall Superpack', he is a distinguished member of this site and has put together a package of artist styled presets that are better than anything you will find in the 11r. I have also had good times with a guy named Benoni's presets, and this site has a free download section too.

But the same preset will sound different from one 11r to the next based on what is going in to the 11r and what the 11r goes out to.
So..
what is your signal chain (guitar, effects, amp, speakers, etc.)? Do you have the free 'Eleven Rack Editor'? Do you use your 11r with a computer?