My favourite since 1998 would be "Prophets vs Profits", sometimes this is confused with "The Mix Tape" since they have some overlap. Here's a playlist of "Prophets vs Profits" https://www.youtube.com/watch?v=cbuBpavobMk&list=PL3l3CTIjIb5gfHOIfdNjDocesSSlrFCmH

For albums I also would recommend "Kristyles", "The BDP Album", "Hip Hop Lives" with Marley Marl and "The Block Party" with Kid Capri https://www.youtube.com/watch?v=_he7cwg3eN4&ab_channel=KRS-One

Here are a few really good individual songs that I love:

Gunnen Em Down https://www.youtube.com/watch?v=EeEzlPzQvJA&ab_channel=NekuRau

Life Interlude https://www.youtube.com/watch?v=w5W4LLG3hYc&ab_channel=KRS-One-Topic

Get Yourself Up https://www.youtube.com/watch?v=dBL6yxmYd20&ab_channel=KRS-One-Topic

My Life https://www.youtube.com/watch?v=Dv757cjKgHY&ab_channel=KRS-One-Topic

Hip Hop Lives https://www.youtube.com/watch?v=ZRmbCa4FLnY&ab_channel=HipHopLivesToday

Underground https://www.youtube.com/watch?v=6DbYwsG3T5o&ab_channel=BQCS

I love KRS so could go on all day, hopefully you'll like some of the above.