I do use the tart blend from NorthWoods. I agree it’s pricey, but I really like it! I used their soy also for my candles, but I finally just couldn’t afford it... was super expensive, but scent throw was great and it was easy to work with. I did just switch to the coconut blend from candlesandsupplies, as I live 40 min form them, so i don’t have to pay shipping which is wonderful. I am also having the same issue of large flame, I have used cd and now eco wicks in it. So far I like the eco better. Im going to call candlesandsupplies today to see what they suggest. I have never tried the rrd wicks ever, so was thinking of giving them a try. I have used htp in plain soy. Wasn’t crazy about the curling in both those and the cd wicks.