I think that his best work to date is The College Dropout, this shit is an all-time classic.
All Falls Down, Trough The Wire, Slow Jamz, Last Call >>
Late Registration is epic too but I think that the album don't have the power that TCD had .
Heard Em Say, Gold Digger, Diamonds >>>
Graduation is on some next level shit.
Flashing Lights, Stronger, Good Life, I Wonder, Can't Tell Me Nothing are some of the best songs of last decade.
808's was extra shocking.
When I first heard love lockdown I thought that Kanye can't sing.
Honestly I think that the album could have been better.
College Dropout > Graduation > Late Registration > 808