Don't give up with the E.O's I can't recommend any wicks for you as all my E.O candles have been in 4 oz deep tins so far, & I use a different soy wax. I've had pretty good success with Patchouli, Eucalyptus, Peppermint & Lemon (for sinus problems) Rosemary, Petitgrain...gorgeous,& some others but I don't have my notes to hand. I've sometimes found E.O's work better in tarts than the candles even if the combinations are the same. Pillars are very much harder & I'm still working on them. Good luck in your endeavours & remember to keep notes! Sally.