Datacolor User to User Support Group.

Just a note which may help.  I have the i9100 also and have profiled 
both the old Epson Colorlife paper and the Ilford Classic Pearl.

I found two things.  One is to measure with a blank paper beneath the 
test paper and the other is to wait, wait, wait.  I let the test page 
dry/stabilize for a week before I measured and I wait hours before I 
judge test images.

I printed the same image a week apart and was astonished at the 
difference in color cast.  In a couple of hours the new one was closer 
to the original.  Within a day or two, they were the same.

Oh, don't forget to adjust to optical brighteners if the paper has it.