I've now tried both of these, and they both have strong "animalic" qualities, and might be described as "dirty clean." U2 is clearly more refined, but weaker. Vermeil has a tanginess that I like, but of course one has to be in the mood for this type of frag in the case of either of them. I don't like these kinds of frags as much as I did a couple of months ago (now, I enjoy gourmands more than I did back then), but when I'm in the mood for it, I have to say that I think I'll find U2 a bit too reserved or even playful. I'm curious about how others feel about two frags (not these two in particular) that are similar in at least one important way, but one is more subtle whereas the other provided more of that one thing that makes you use the frag in the first place.