I just found out that the Fallout New Vegas Strategy Guide, that there will be 2 versions of them. I believe one is in hard cover the other is soft. I also believe the hard cover has a different cover as well and is more expensive. So besides the price, hard or soft cover and different cover art, is there any other difference? I can't find any information between the 2 except for what I have mentioned.

I think the collector's edition has concept art in it.

We already have the answer to your question

http://www.gamesas.com/index.php?/topic/1120523-strategy-guide-question/