As much as I like NWA I stopped really feeling them after 100 Miles and Running EP. loved the beats on nikka4Life but I always felt that the lyrics and the content felt somewhat juvenile. Like cartoon gangsta or something and I think they get a pass for that off of the strength of the name. Ice Cube was the soul of the group and it wasn't the same after he left.
The Geto Boys are a severely underappreciated group, without Scarface, Willie and Bushwick, there really wouldn't be a South, so while NWA is more influential as a whole, I would argue that they were really the 2nd or 3rd best group from their era, if you take away the influence. The thing is if you are talking Texas, Oklahoma and Tenessee hip-hop almost every fukking rapper traces their roots to the Rap-A-Lot records and the Geto Boys. So I might even say the Geto Boys ended up having a longer reaching impact.
I won't really go into the solo stuff because it ultimately ends up being Cube vs Scarface.