Miragul's Menagerie (Everfrost Camp) has Call of the Muse! Now, not only can we make melee cry, and nukers cry; we can make DoTers cry, too! Apart from the Muse's divine inspiration, Miragul's also has the Malevolent Dirk of Deception and Club of the Mad Researcher, two very nice, highly augmentable weapons. It also has the Radiant Permafrost augment, a Type 4 aug that adds the Permafrost proc (150dd) to weapons.
Also, Takish'hiz (North Ro) has the best LDoN plate armor: Royal Attendant's (equipment slot here) of Sand. Each of the Royal Attendant's pieces has a Type 3 slot (among others), so NRo is the place to go if you're after some VERY nice armor that has slots for those delicious Type 3 augs (such as Vengeance, Regeneration, FT, Instruments, Item Haste, and other "worn" effects). It also has a Regenertion V Type 3 aug (chest slot only) and other very nice augs. Tak also has Fufil's Diminishing Dirge, which is a nice addition to the lineup of any Chant-using bard.
So, Mir and Tak are my two favorite locations in terms of items. In terms of zone content, Deepest Guk (South Ro camp) and Rujarkian Hills (East Commonlands camp) are my picks, just because I love froggies and orcs. =)