What is the best doors album in your opinion?

I listen to "The Soft Parade" often. Its underrated.

I think their first album is the best. They worked on those songs for over two years before they "blew up" and fame overtook them. They didn't have day jobs and they worked hard at their craft during that initial career phase. They could cherry pick the best of the repertoire for the first release. The second album had many of the leftovers from the first album. There is a vibrant originality in that first album that the followups never equalled to my ears (even though they made a lot of excellent music after the first release.)

Tough call.

"The Doors" is pure raw energy and "LA Woman" shows the band's maturation and polish.

"Break on Through" may be the best opening cut of any debut album.

Strange Days for me. I find it to be the most trippy.

"Soft Parade" has a special place in my memories but "The Doors" is their best work. The excitement, energy and originality in the music is still there today some 40+ years later.
In fact if the question was what is the best debut album by a band, this would probably get quite a few votes.