[alt-photo] Pictorico

[Diana Bloomfield]

Does anybody know the difference between Pro Ultra Premium Pictorico  
transparency film and the regular Premium Pictorico transparency  
film?  I need some, and the place I buy it from seems to be out of the  
regular "Premium" in the size I need it, but they do have the "Pro  
Ultra Premium," which -- of course-- sounds really special.  Doesn't  
seem to be much of a difference in price-- maybe $3 for that added  
"Ultra."  What is the difference?  I assume it works in just the same  
way as the other.  Anybody tried it?  Thanks.

Diana