The "awesome augs" people are most likely are referring too are the AC augs that come from the LDoN raids.
There are both 30 ac and 35 ac augs from LDoN raids, although some of these have been single grouped now.
Apart from that, there are few things that warrant spending time in LDoNs nowadays, though I am looking at possibly getting the anger aug for my War as a backup aggro aug when using slow or snare proc weaons.
Oh, Bloody Ancille pouch is nice too, if you have a toon that needs.
More info on the AC augs can be found on the SK, Pally, or Warrior class sites.