my fav is 7 and insomniac
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His new albums have a load of duets with American Urban "stars".
Sigh, at least it's not rap.

i been a fan of Enrique since 1995, so i have all of his albums. and i think you should get all of them;) their all greatbut to answer your question (these ones are my favorite):
SPANISH:

1. Cosas Del Amor (I think is his best Spanish album)
2. Quizas (A more mature sound than his previous album, but the lyrics and music is awe5b4some)
3. Enrique Iglesias (His debut album is a classic. It includes 5 number 1 Billboard Latin songs. A must have for all of Enrique fans)
   ENGLISH:
4. Escape (This album is flawless, in my opinion is his best English album)
5. Enrique (His English debut album is a must have)
6. 7 (This album was not a success, UNFORTUNATELY. But is a really excellent album, the sound is more mature than his other albums (English and Spanish). Also, is more of a soft pop rock flavor. Very enjoyable).
   However, Vivir and Insomniac are also a must have. I dont think I was much of a help. But you should try and getting all of his albums, their all "A material."

I got 4 albums
I got the new one
Seven
Escape and Enrique
I think Escape is the best tbh