Haven't tried them all, so I will comment on my experiences only.
I think I am quite methodical with my process and have had very good results with deer only a few yards away.
Including stalking to within 20 yards of a mature Doe.

#1) I wash all my clothes with UV killers and scent elimination soap, this includes wash clothes and towels, then secure these items in plastic bags. I even wash my hands with scentless soap prior to touching them while taking them out of the washer and dryer.
#2) Before going afield if time permits, I take a scentless soap shower and use the virgin towels to wipe dry.
#3) I spray my truck with scentless spray befor getting in.
#4) When @ my spot after getting out of my truck, I spray all over with scentless spray and put my scentlok on.
#5) Lastly, when I get into my tree stand, I re-spray if I think I need too.