All of Ice Cube's albums are engineered REALLY well...I'm a sound engineer and I always tried to get my tracks to sound like his.
From a mixing and mastering perspective,
1. 2001 - Dr. Dre (1999)
2. All Eyez on Me - 2Pac (1996)
3. Trauma - DJ Quik (2005)
4. Doggystyle - Snoop Dogg (1993)
5. The Chronic - Dr. Dre (1992)

Paul's Boutique. The engineering and mixing on that album is crazy. Many were jealous when it dropped.
It was more so the beats and numerous samples that flipped people's mind
Section 80 is a sonic masterpiece.
too
Section.80 is not on GKMC level in terms of mixing (the best sounding hip hop album of the decade so far)
Quik's last album wastoo
DJ Quik - Fire & Brimstone - YouTube
DJ Quik Feat. BlaKKazz K.K. - The Book of David - Poppin - YouTube