They're like, the biggest niche group in hip-hop. I think their testament is that if you're not into the roots and you like hip-hop, you still probably like them. If you're into their brand of rap at all, you probably think they're consistently a 4 star album making group. If you like them specifically, then you think they have at least a couple of classics.
Also, this is Okayplayer. It's a weird enough argument as it is, but this is a really weird place to argue it.