I prefer the first Blac Monks album but no mercy is dope too... Mr 3-2's first solo album "Wicked Buddah Baby" is a banger, I think thats also on rap-a-lot
I don't have a "best rap a lot album", It depends on my mood.
But Geto Boys - Resurrection is definitely one of my favorites. Also My Homies.
Shit takes me back in time