Favorite Quads of all time:
1) Inventive
2) Thunder Eyes
3) Corps de Colour
Sounds like alot of other people like those too!
For those of you that didn't get a chance to try Sweet Tea -- it was pretty unique color assortment but I didn't reach for it too much. Ended up swapping/selling this one away.
From the past years, I'd say these -- if you don't have similar colours in your collection:
1) Smoking Eyes
2) Spiced Chocolate
3) Pandamonium or Gentle Fume