Six-Line Wrasses are my favorite, lot's of color and great personality's.
Green Chromis are always a welcome addition too-right Jack & Deb
As for tangs, I like the Koles as they have a crazy appetite for green stuff!
Yellow tangs are always nice too-as long as they are healthy. Everyone(LFS) have Yellow Tangs but not every store has healthy ones!
Gobbies are great in my books too, there great for keeping the bottom clean!
Cheers, Rich