Tar and nicotine contents are variable in these products. The Virginia tobacco is the most common type in the 84mm long cigarettes. How much tar you take in is dependent on the way you puff a cigarette. Exact figures are unavailable, but the hierarchy is as follows: Insignia/B&H Lites, Classic Ultra Milds/Marlboro Lites/Marlboro Advance, Classic Milds/Davidoff/Dunhill/Classic Regular, Gold Flake Kings/Gold Flake/ Wills Navy Cut/Four Square and so on.
A slash(/) here means the increment in tar. AS far as nicotine is concerned, The nicotine levels are being increased in every brand periodically, the Marlboro Reds and Davidoffs on top, the lites on the bottom. If you are looking for a better alternative, try e-cigs or rolling your own using tobacco(Captain Black, Sailor are few brands)