When it comes to discussions of the different versions of RuneQuest, some editions naturally have more advocates than others. 1st Edition doesn’t seem to be widely discussed, I suspect due to a combination of a) it not actually being sold for that long before it got replaced by 2nd Edition and b) 2nd Edition largely being an updated version of it. 2nd Edition has many fans and advocates, particularly Glorantha fans who appreciate how Glorantha was intimately tied into the system, and that’s largely guided the design of the latest edition. 1984’s 3rd Edition is a little divisive; some fans appreciate the extra detail it offers and prefer the fact that it is less tied to Glorantha (though the magic systems are 100% derived from the Gloranthan metaphysic), whilst others feel like it went a bit too deep down the high-crunch rabbithole for too little return.
(The current powers that be at Chaosium seem to take this stance, and indeed have taken this stance for a good long time; Michael O’Brien, current Vice President of Chaosium, put out this article on his website and through the Tales of the Reaching Moon fanzine aeons ago back when he was just a regular fan like the rest of us and not one of the Chaosium head honchos. Seeing how the current Chaosium regime is made up of the Moon Design folks, and Moon Design grew out of Tales of the Reaching Moon. Seeing how recent statements by Chaosium leadership suggest that they still consider 3rd Edition to have been a bit of a misstep – not least because it meant that Chaosium lost control of the RuneQuest trademark for a long period of time, I don’t see much reason to think that their opinions have changed that much in the intervening time.)
Then you have the two Mongoose editions, which don’t seem to have many advocates; the first one seemed thrown together quickly and cheaply and I don’t recall ever seeing anyone seriously claiming it was their favourite version, whilst the second version is generally held to have been butchered by editing; it survives as Legend, but doesn’t seem to have gained much traction, not least because its main designers went to set up the Design Mechanism and publish RuneQuest 6 (now known as Mythras), providing a much stronger version of their vision for the game. This edition does have its advocates, mainly from folk who are happy with high crunch and appreciate the wide range of combat options it delivers and don’t mind that it isn’t closely tied to Glorantha.
There is, however, another RuneQuest edition which doesn’t get so widely discussed – or when it is considered, it’s lumped in with the standard Avalon Hill presentation of 3rd Edition RuneQuest (whether that be in the form of booklets in a boxed set, as Avalon Hill initially presented it, or as a big fat book compiling the booklets as they shifted to midway through the edition’s run). This would be Games Workshop’s presentation of 3rd Edition, which came out in a set of hardcover volumes in 1987, some 4 years after RuneQuest 3rd Edition debuted.