It depends completely upon each individual's personal tastes. My local vape shop has a e-liquid flavor sampling bar with over 120 flavors to choose from. They have a list of all of those flavors on a sheet of paper, with the tobacco flavors marked with an asterick for those people looking for a "tobacco flavor". People are free to try any number of flavors, from tobacco to menthol to fruit to bakery flavors.
Finding a flavor that they like is as important as finding the right e-cig device to use.
Truth be told, no "tobacco flavor" is going to taste like a particular cigarette brand, ie Marlboro, Camel, Winston, etc. As Rocket pointed out, the flavor may smell like a pack of cigarettes when you first open the pack, but the vapor produced from the e-liquid will only be a "hint" of what the brand name cigarette tasted like.
http://www.e-cigarette-forum.com/forum/new-members-information/136573-tip-newbs-seeking-tobacco-cigarette-flavor.html
Realize that after years of smoking a smoker's taste buds have been severely damaged. Once they have quit smoking, the taste buds heal and a normal sense of taste should return. Many new vapers who start out with a tobacco flavor will soon realize that they no longer like tobacco flavors once their taste buds have healed, and will change to another flavor. They may realize they want nothing to remind them of how a cigarette tasted. At that point they may switch to a candy or fruit flavor, a coffee flavor, etc.
There are also new vapers who want to start out with anything that doesn't taste or remind them of a cigarette. I would think that if these other flavors are acceptable, these vapers are already ahead of the game.
It's also important to start out with the right nicotine content of the e-liquid, determined by how many cigarettes you smoked per day. For example, a pack per day smoker might be recommended to start out with 12 - 18 mg of nicotine. Only a small bottle (10 ml, or a week's supply) should be purchased initially, to be able to determine from their experience whether that amount is adequate, too much, or not enough, nicotine. Depending upon their experience, they can then determine if the original nicotine percentage is what they should continue with, or whether to jump higher or lower.
A GOOD STARTER SETUP FOR A BEGINNING VAPER