I feel like I have done this before, but here it goes:
1. Blood Sugar Sex Magik
2. Freaky Styley
3. Mother's Milk
-----
4. The Uplift Mofo Party Plan
5. One Hot Minute
-----
6. Californication
7. Red Hot Chili Peppers
-----
8. Stadium Arcadium
9. By the Way
I break their albums up into four groups:
1. The first group is their best work. I can listen to each of these albums and thoroughly enjoy just about every song.
2. The second group is comprised of albums near their peak where I don't necessarily hate any of the songs but the quality isn't as steady throughout for me.
3. The third group is their two albums that have a handful of songs I absolutely LOVE--'Around the World', 'Get on Top' and 'True Men Don't Kill Coyotes', 'Get Up and Jump' for example--but the rest don't do it for me.
4. The fourth and final group are albums by the Chilis that I don't even listen to that often and I don't place them in much higher esteem than other banRAB work; and I love me some Chili Peppers. By the Way has a great single, 'Can't Stop', and Stadium has some high points too, but I haven't listened to those two albums more than a couple of times all of the way through because they get soo gawd damn boring!