I think just like food, 'best' flavours can be changing. If you eat a 5 seasoned steaks in a row, a bowl of ice cream tastes good.
And vice versa.
I am relatively unexperienced, but some of my favourite smells have been Chocolate Rain (Dark Chocolate/ Liquor & Berries), Agent Orange (Sour/ Oranges), Kolossus (Lemon/ Pepper), Blue Chocolate (Berry Candy/ Sherbert), Jackberry (Blueberry Pie).
I was somewhat a skeptic when reading descriptions of strains, but the ones i mentioned all were a very pleasant surprise. The smells couldn't have been closer to what they were described.