Best System of a Down Albums

I love every single song on this album. Every time I hear Aerials, it gives me goosebumps.
Every song is great. My favorite ones are Chop Suey!, Toxicity, Aerials, and Forest.
Toxicity has to be their best album. You rarely see someone arguing about that.

I have listened to almost all their songs since 2014. In the last month, I listened to the full albums. In my opinion:
1. Mezmerize
2. System of a Down
3. Toxicity
4. Dreaming
5. Steal This Album!
While I love every song on Toxicity, this album is more musically complex with tracks like Question! and B.Y.O.B., and then you have plain awesome metal headbangers such as Cigaro and Old School Hollywood. It's extremely tough to choose between this and Toxicity. However, this album will always hold a place in my heart that Toxicity cannot.

Their heaviest and purest album to date. Sugar and Spiders are played on the radio, but those are underrated. Chop Suey! is good, but let's be honest, you can get sick of it easily. This album feels new almost every time you hear it.
They did this without a commercial viewpoint, or at least had less to worry about what people thought and who bought the album. That is why this is their purest and best work.
The only System of a Down album without a bad track on it. It's heavy, it's raw, it's creative in new and astounding ways, and it was truly ahead of its time.

My favorite one. I don't get why people like Mezmerize better, but whatever.
They achieved their ultimate potential with Hypnotize.

The best of the five for me, without a doubt. It has the perfect combination of heavy riffs, melodies, and harmonies. I can listen to the whole album from start to finish in a way I can't do for the rest of them.
This album is very underrated. It has some elements that were used in Toxicity and later influenced the sound in Mezmerize/Hypnotize. I think it deserves more appreciation.
I believe this album is the best of the five. The vocals are amazing. I'm a sucker for harmonies, even if they're not the best ones (see Roulette).