I'm not saying Aventus is the best thing ever, but I own it and love it, and I agree completely with those who have said there isn't anything else like it.
Bleecker Street has a similar vibe, but it smells very different.
If you want a scent that can serve a similar purpose, there are quite a few. But if you want one that smells like it... well... I haven't smelled anything even remotely similar.
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