Hi Chuck,
I find that the local Marlboro Reds are nothing like the Marlboro Red cigarettes in the States or elsewhere. The package says that they are made locally by Leon Jimenez (think cigars).
I have found these cigarettes to be smooth, slow burning and somewhat similar to American Spirits. The tobacco flavor is closer to cigar tobacco than US cigarette tobacco.
I wouldn?t be surprised if they additive-free, or mostly.
I would suggest you try them. I buy mine in Nacional Supermarkets for about 3 US$ per pack.