I know you asked favorite scents, but IMHO, Partylite candles are the best by far. They burn completely down to the little metal wick disk and nothing is left...love it! Unlike some candles I won't mention by name that leave at least 1/4 of the candle left in the bottom and are super expensive.
Ok, now my favorite scents...I recently decided to do some wickless candles and bought a couple of scentsy pots. My favorite scents are Home Sweet Home, Perfectly Pomegranate, Sweet Pea and Vanilla and Black Raspberry Vanilla.
Funny side note, my hubby is much more of a candle person than I am. He actually goes around and lights the candles, almost every night. =)