When I clicked on the post I thought you were talking about the New Vegas
BOOK "All Roads" while in truth you meant the
GUIDE. In my opinion it would be fine to use the guide for information on building a good character and to look up weapon stats, but for the quests and locations of New Vegas it would be much more enjoyable to figure that stuff out on your own for the first and/or second playthrough.
The Collector's Edition guide has 32 extra pages and it's mostly just extra concept art and background information on various factions and the currencies within the game. If you plan to buy the guide try to get the Collector's. I really enjoyed the extra information and it was only a few extra dollars.
I think you'll find as all of the patches are released for New Vegas a lot of the negativity will dry up and you won't see anymore negativity than you did in Fallout 3.
I hope this post has been detailed enough to answer your questions.
As for stumbling upon awesome things in New Vegas...
Spoiler I found the 50 Caliber Sniper Rifle called the Anti-Materiel Rifle. This thing is AMAZING.