Before I go ahead and settled this debate for good; I spent most hours surfing the .net to get an idea of what others were saying; if you have done the same you will probably find similar results ~ that in the general publics eyes, WoW Dugi Guide vs  WoW Zygor Guides is pretty much even.  U also probably found that a few opinions were biased towards the guide they owned.  These findings aren’t very helpful in finding an outright winner however; they help show the fact that with what ever guide you end up choosing zygor and dugi guides, you will should be very satisfied!
Zygor was the home planet of the Zygons. (PROSE: The Bodysnatchers) It was known to be warmer than Earth and covered in water, which was in the form of lakes with a different mineral composition than those of Earth. There were also no icecaps on the planet. Native lifeforms of Zygor included the unaltered Skarasen and the Zygons. (TV: Terror of the Zygons)
Dugi Guide, I have found, is a great solution for all those looking for an elaborate WoW Guide. Besides having the always popular leveling guides for both Horde AND Alliance additionally you get a gold earning guide, which is also the most popular Warcraft product. On top of this he covers a multitude of topics from macro’s, talent builds, profession guides and even more.
We have no idea what implications this might have and whether or not it even indicates anything, since Patch 8.2 is still in testing and a Tuesday launch is more than unlikely due to Essence tuning and Azshara's Eternal Palace, which is supposedly coming shortly after launch. Blizzard said they wouldn't be delaying the new raid like they did with Battle of Dazar'alor.
Another part I like about Dugi’s leveling guide is the ease of use. You’ll be given the guide in different forms so that you can find the one that fits you. For those that like to have a printed guide alongside them he provides you with a printable and image heavy version of the guide. A very powerful system Dugi uses is his in-game leveling addon that permits you to play without having to take your focus with the game itself. The addon adds a tiny window for your World of Warcraft game that tells you what area of the guide you’re at and how to proceed next.
It is a wonder how this is even a debate; Zygor WoW Guides has clearly got the best product going.  Seeing as they have a lot invested in the WoW leveling guides community; they are here to stay.  You won’t have to worry about their guides going obsolete or out of date, as they are literally a company that has put a lot of hard work and dedication into their products.  Dugi’s WoW guide is not terrible and many many people love this product..  However, with free 3rd party addons as a part of their lvling guide system; I wonder how stable their product is in the long run. Nonetheless…
Learning about dugiguide proves to be quite easy once you read through this article. It has all the necessary information on dugiguide. Whenever you think of Dugi World Of Warcraft Guides, look here. The length of an article is rather immaterial about its response from people. People are more interested in the matter about dugiguide, and not length. Thinking of life without Dugi World Of Warcraft Guides seem to be impossible to imagine. This is because Dugi World Of Warcraft Guides can be applied in all situations of life. 

 Dugi’s Guide has released their Cataclysm bonus which is an in game talent advisor.  Finally and actual bonus worth talking about; or so I thought.  Once on the inside of  Dugi’s Guide members area the truth was revealed.  The talent advisor bonus is just the 3rd party addon “Talenteds”!  Using TomTom add on for navigation is already a large negative in my books, now offering a free addons as a bonus.  Dugi, Dugi, Dugi.. – not cool.  I’m tempted to take another point away from Dugi but that would be my personal opinion.
Discipline: Premonition - Heals nearby targets within 20 yards for [ 75% of Spell Power ], and applies Atonement to yourself. Deals [ PS * BC1 ] Shadow damage to yourself for each Atonement you have active, and increases their duration by [ 5 + 0.1% of Spell Power ] sec. Holy: Rapid Mending - Prayer of Mending is now instant cast, and its jump range is increased by 10 yards. Shadow: Void Origins - Void Eruption is now instant cast. Rogue
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