Spyder vs i1pro 2 or i1 pro 3 spectrophotometer

Hello Walker,
I understand there is big price difference between two, but Is there a big accuracy difference in detecting the tonality for black and white target sheet between two system when scanning?

For BW there is really no accuracy difference.


Ok. Thanks
I was thinking of using spyder print photo spectrophotometer for piezography professional edition if accuracy is not different in black and white target scanning and also piezography professional edition support it. Unless there are frequent technical glitches for using it- Then please let me know before i deep dive in to it.
Thanks in advance
Appreciate your help in it.