I forgot to take notes on how warm the candles got, but I don't remember them being too hot. Next time I test, I'll have to pay better attention to that detail. I have heard, too, that other people like the CDs better. I just bought 100 of each of the ECO 8, 10, 14,16 because of a recommendation chart I referred to, of course before I read about the CDs... I am going to test a new scent (Lime Cooler) and I was thinking of using ECO 10 with 8% FO per lb. of wax. The lilac I tested with 8% filled the house...that's kind of why I was thinking 8% rather than 6%. That same test with Lilac achieved a FMP on the second burn. Each time I burned it (3 HRS each time), the melt pool was between 1/4 and 1/2. Does that sound right? Thanks for the help!!!