[npc]

I have two versions in my possession:
2003, Cardoza Publishing, ISBN 1-58042-082-6
1994, Carol Publishing Group, ISBN 0-89746-100-2
The 1994 edition also contains a copyright note, 1983, Gambling Times.
Perhaps Strangely, there is no mention in the 2003 edition of any prior editions.

I haven't done a page-by-page comparison of the two volumes.
There are some differences, but the 2003 edition seems to be
mostly a superset of the 1994 edition.

Again, I haven't done a careful analysis, but upon brief inspection, I don't see any reason to think that the 2003 edition is clearly inferior to the 1994 edition. It's conceivable, I suppose, that the new material in the 2003 edition is bad, but that would surprise me. Based on the information I have, I wouldn't hesitate to buy the new edition, but perhaps I'd feel differently after a careful reading of the new edition and comparison against the first edition.

Hope this helps a little.