I used the wick guide to help me find the proper wicks for my candles, and after testing CDs and ECOs, CDs, (CD10 to be exact) for my 8oz candle, worked the best for me! I had to wick down from the initial recommendation, and doing so provided the best burn time, melt pool, and scent throw for my 464 based candles. Yes there is some mushrooming after burning for a while, but I've learned that as long as I keep my wicks trimmed it does not effect my candle burn. ECOs did not put out enough HT for me, so I'm sticking with CDs!!