Indigo Stocks

Currently running Canon Imagepress 8000 for color & VarioPrint 110 for B&W. We are experiencing a lot of down time on a monthly basis. Looking moving to Indigo press when our lease runs out.
Two main concerns I am coming up with, outside of the cost increase.

Do you need to run Indigo approved stocks only or any digital approved sheets?
Smaller Image area when compared to the 12.5 x 18.5 of toner press.

I am looking into the 5r or 7r options when we make the jump. Any insight would be helpful.

 

We went from Indigo to Canon 8000. I do miss the plastic and vinyl running well on the Indigo. And yes for the most part you want Indigo approved/ digital approved sheets.

 

any digital paper can work with indigo if you care about prices get sample from the provider and try it to see... any way the best paper for Indigo is GPA