Here's an example using two cels that were 
recently on eBay.

This Revenge cel was 
recently listed. Compare it to this Orphen cel. Even a 
quick glance shows the obvious superiority of art 
and detail in the Orphen cel as opposed to the 
Revenge cel. In the Revenge cel, the face looks 
flat, the eyes are lifeless, shadows are not 
right, the hair is one big mono-colored blob 
(causing it to look like it is not on his head or 
in front of his face; it creates a total lack of 
any type of 3-D effect), and there's just a 
general lack of detail. In fact, that Revenge cel 
is the BEST Revenge cel I've ever seen, and it 
STILL pales in comparison with a normal Orphen 
cel. What I love is how the seller never 
mentioned it was a Revenge cel, probably because 
most US buyers don't know about Revenge, despite 
the fact it is plastered onto the cel. I'm still 
baffled at how the Revenge cel went for MORE...

-Misha

P.S - This is not meant to insult anyone's cel 
tastes...I just abhor Orphen Revenge vehemently 
and think rabid monkeys could have done a better 
job with the art ;p