Opinions on full-battle Gettysburg games

[ArizonaTank]

1977 AH Gettysburg would be my dark horse vote.  You can still get a copy on ebay for about $20 bucks. 

I really like the intermediate game rules.  Plays in one sitting, and the map is just gorgeous. 

http://www.boardgamegeek.com/image/1605362/gettysburg-1977-edition?size=original

Not everyone's "cup of tea" however and the game has detractors. 

There is also an advanced game that is pretty intense, and very "miniature" like.