I love all the ones you've got (except for Blue Brown, only cuz I don't have it) Of the permanent ones, I love Old Gold, Pink Bronze and Kelly Green. Chocolate Brown may be another good one. As for the LE's:
D'Bohemia collection: Melon and/or Deckchair (I'd get Melon first).
Lingerie collection: Lovely Lily, Goldenaire and Pink Opal are so pretty and versatile (tho P.O. may be perm?)
Sweetie Cake collection: Pinked Mauve (I don't have it yet but it looks so pretty!); and lastly
Sundressing collectin: Gold Dusk and Softwash Grey (both are great, but if I had to choose one, Gold Dusk is definitely it!).