I have been using Scent Killer simply because it is what is available at the nearest fleet farm. I live in a small town and that fleet happens to be the closest anything to buy such items.
But I decided to just buy more at one time when I travel a little farther and hit some bigger stores. I bought some dead down wind and have been using it, I like it a lot. I'm going to give it the whole season before I say I like it better than Scent Killer, but so far I have had a couple deer down wind. They could smell me, they were real intent on sniffing the air, but were unalarmed. they didnt catch any scent until they were within 20 yards, and when they did, they just sniffed the wind real hard, they didnt run off or stamp their feet, or raise their tails, nothing like that. one was a young buck, and the other was an older doe. so although I could tell they smelled me, it wasnt enough to alarm them. But, I'm going to hold off my complete judgements until after the rut. once those big wiley bucks are scent checking cover, they really get sensitive to human odors. we'll see how november goes, but so far, dead down wind is working good for me.