He's hands down the best rapper to come out of Long Beach. I think he has gone as far as he could as a member of Slaughterhouse and in his solo career fame-wise. Out of the four members he's probably the one who needed Slaughterhouse the most as a platform to launch himself.
I have been a fan of his music for over 7 years now and pretty much everything he put out is dope. The Sex, Money & Hip Hop project and now the KXNG STATIK album are among the top releases of the last couple of years in my books. He has longevity, just never made it as big as he should have.
His flows were at best during the Death Row days and early Treacherous/Dynasty days though. My all-time favorite song of his has to be "Boom Boom Clap", his best shot at blowing up by the way. "Still Tha Row", "So Crooked" and "Home" are also among his top tracks that come to mind.