I’ve always preferred cialis over viagra, but I do think which you find best will vary from person to person as I have a few friends who swear by viagra and don’t think cialis is even worth their time. In my experience though, viagra gives me pretty bad headaches, redness, and an overall full feeling in the face and chest that is pretty uncomfortable. In contrast, the worst side I get from cialis is a mild headache, and that’s really only if I take a substantial amount more than I usually do; the pumps and vascularity on cialis are ridiculous though and usually the reason I actually take it, lol.