So I've been vaping for a couple months now. I started by using Apollos standard kit and since then have purchased a DSE901 and a Ego. I LOVE my Ego and want to get away from buying prefills but I can not get my flavors right, buying pre mixed or mixing it my self. My biggest grudge is, I fell in love with Apollos coffee flavor, but they only sell it in their pre filled cartomizers and not in their e-juice section. I have tried several combinations of flavors and have not been able to match the flavor. Maybe I`m just not buying my concentrates from the right vendors or something, and I know it is a long shot, but if anyone is familiar with this particular taste, and knows how to duplicate it, I would love the advice.