Yea...tobacco juice needs to steep...at least a week, longer is better though. I bought 5 different ones back when I first started...even after a week, they all just had a strong Caramel taste/smell. Since then, I've bought over 25 different flavors and have been vaping them..went back and used some of the original flavors after about 3 weeks..and must say, they are all fairly decent now.
You should face the fact now, that you will not find a juice that taste just like a real cig. If you keep thinking you will, you'll be disappointed every time new juice comes in. You'll eventually find some flavors that you like, even better than a real Cig. May I suggest buying up small bottles of different flavors...then, once you find that one that you really like, get bigger bottles.
Good luck!