In no particular order, here are my favourites:
OPI Every Month Is Oktoberfest. This is such a beautiful polish! It is interesting that it looks so different in the bottle than it actually is. Let's face it, I would have loved this polish for its name even if it was ugly, since I was born in Germany in October.
SpaRitual Optical Illusion. I have nothing quite like this murky, swamp-like polish.
Layla Misty Blush. Very unusual colour for a holographic polish.
OPI DS Fantasy. A perfect one coat polish with amazing depth.
Barry M Navy. It seems that there is nothing particularly spectacular about this polish, but to me it is the perfect dark blue shimmer.
Orly Miss Conduct. Happy, bright colour with some holo sparkle. A pink cousin of DS Extravagance.
SpaRitual Shooting Star. Purple, pink and blue shimmer all rolled into one!
Orly Androgynie. Funnily enough, I didn't like this polish when I first tried it, but because I don't have anything that looks even remotely close to this it makes the list.
Essie Bobbing For Baubles. Interesting colour, great formula.
China Glaze Midtown Magic. I like that it has this lit from within
Barry M Denim.
Essence Gold Old Buffy.
Essie Poor Lil Rich Girl. Festive red jelly, so shiny.
Essence Walk On the Wild Side