Breeze, good question to ask as you'll get so many different answers - lots of inspiration
(although as noted by Mazza, most of the best-loved get discontinued, humph):
So my all-time faves are (technically 7, but there are two tied for fave Xmas smells and I couldn't whittle it down to 5):
Lavender Vanilla (very soft lavender)
Cottage Breeze (salty ozone)
Red Berry & Cedar (fruity, piney Xmas scent) or North Pole (cool, minty gorgeousness)
Evening Air (soft, musky, ozone but spicy)
Pomegranate Fruit (rich, juicy, luscious)
Sunwashed linen (genuinely smells just like rolling around in some freshly washed cotton sheets you've just brought in from the line on a hot summer's day)
I like most smells, but there are a few I absolutely loathe namely most cinnamon-based scents, coffee or chocolate (smell sickly to me) - anything else, bring it on!