Taste and flavor is a really subjective thing. But, early on I realized that I was rushing my whole "steeping" process. I buy in "blocks" of juices now. Three bottle from here, two from there, 4 from another place, half are ones that I like and half are new ones to try that I hope I like. Anyway, I really don't start another group until the last group is done. I have my current batch, the batch that is halfway steeped, and the new batch that I just received. A batch lasts me about 2-3 weeks, so that means the batch that I just got is 5-6 weeks before it gets into a tank. Sometimes I will use a dripper to try flavors to see if I am happy with them, but less so anymore.
I just got Grandma's Cinnamon Danish (Nicoticket) and he said he steeps his for 6 months. Really, that just told me that I shouldn't rush. I warm most in a crock pot for 6 hours, then the top comes off for 24-48 hours for the alcohol to evaporate in a drawer (darkness). A lot of covering the top and shaking during that time, as in 5-6 times a day. Then it is just leaving it in the darkness until its time. Just patience.
I noticed that the flavor quality really went up. Just works for me.