Posted By:
robert aHi Brian,
I've been looking at some of the same questions for the past few years and have a couple of answers for you concerning e98s.
I have seen every e98 player with each of the four color backgrounds.
So, there are 120 different e98s. There are no other variations that involve the fronts of the cards.
You can view 70 or so of the different color variations at my website:
http://www.imageevent.com/caramelcard
I DO NOT believe any color to be more difficult, but i've seen the fewest of the green fronts. Other collectors have thought red to be a little tougher, but I really think it's about equal straight across the board.
There are distinct players though that are much tougher than others.
Rob