As a Nas stan... Blueprint. Lyrically and conceptually on just bars and lyrical structure it's Nas by a margin. But there some inconsistencies in production and some of the tracks on 2nd half I could skip. Blueprint production just close to flawless... One of the best rap records ever produced. shyt TUFF to beat if you lackin on some joints there and Still was... Same reason I wouldn't take God's Son over Blueprint even though it's ahead lyrically and conceptually too.
But I'm still takin Illmatic, IWW, Lost Tapes, KD2, Magic and KD3 over Blueprint.