These candles burn so evenly and clean. The wicks are very easy to keep trimmed. I have tried numerous PI scents and I keep coming back to try more! I cannot say that I have a favorite because each scent is so delightful and unique. Sometimes I wonder how they can get such true scents in a jar! Another plus is the customer service. Each shipment of candles comes with a personally handwritten note and several free tea lights. It is such a joy to own and/or give a PI candle as a gift.