have 15u11 and 15X01 and get excellent results and they smell just like many people have said. The performance is even better than has been mentioned. Both last at least 12 hours on 3-4 sprays and I can fill up a classroom at the 8 hour mark. I am new to fragrances but Aventus is easily my most complimented. No offense but I think some of you guys maybe dorks. Its not like a magic potion or anything. You still have to be good looking, workout, dress right, and have a personality. If you are a dork then it won't help you because you will still be a dork. Girls aren't going to jump you just because you smell good. And they aren't going to chase you down the campus to compliment you. Grow up. I don't mean to be cruel, but some of you guys seem like you spend all day smelling yourselves. That is probably why you can't smell anything. I think some of you maybe making it up when you say other people can not smell you. There is no way Aventus lasts 2 hours and sucks. I let 2 buddies borrow some of mine and it works the same on them. I can smell them form 6 feet away sometimes. Not the whole day, but it is very strong stuff. Maybe your skin sucks, but stop sniffing it all the time and maybe that will help.