Taste is comletely subjective and difficult/impossible to really answer.
But, for 1 I would say don't expect vaping to taste the same as smoking.
They are completely different things.
You can get close, but definately not the same.
So trying to find a juice that tastes like the cigarettes you currently or used to smoke is unrealistic and setting yourself up for dissapointment.
That said, don't be afraid to mix your juices. I had another thread on the same thing. You never know what you'll find when you mix. I found a great flavor by accidentally mixing...
But starting with several 10ML bottles is a good way to go.
Keep and clean your empty bottles, then when you want to experiment, you have a bottle ready to mix just a little bit. Don't mix alot until you find something you like.