I think the best in my opinion is Reasonable Doubt. Personally I find it to be a complete rap album. He has the soulful beats, the gritty boom bap, the word play and double/triple entendres, he has the samples, the skits, and of course the storytelling. He touches on the darker side of street life, losin ya man’s and how the riches you get from it never really heal the pain from the things you’ve done. He is very introspective. On 22 Two’s he delivers a freestyle which helps to complete the album as a rap masterpiece. He clearly has the bravado and cockiness of a veteran rapper.
To top it off this was his FIRST ALBUM. I think this takes the cake personally for me.