Out of the "Garden of Stars" (the collection that is based on Angel, but has a floral scent added, and there are three varieties: the "Lily Angel", the "Violet Angel", and the "Peony Angel"), I have the Lily Angel and I like it a lot. It smells like Angel, but has a very pretty floral (lily) scent mixed in. It's not as strong as Angel, but you can still smell it without spritzing like crazy. I didn't like "Violet Angel" or "Peony Angel" as much, and would repurchase "Lily Angel" before I would buy either of them.
I tried "Alien" at Saks, and it is the most atrocious smelling perfume I have smelled this year. I had them spritz it on a card and my first reaction was that it was weird, so I tucked the card into my purse and thought maybe it would smell better once it dried down. I forgot that I had it in my purse until the next day and got it out and it still smelled horrible. It is nothing like Angel, I was so disappointed. It's hard to describe, but if I were to attempt to describe it, I guess I'd say it smells like Potpourri, Windex, and Mop-n-Glow. The only thing I liked about it was the bottle color.