Tough call, I'm gona go TI by a very slight margin just cause Fab never pushed himself. He found a formula that works and made the same music for almost 2 decades now following that formula. Nothing really wrong with that, if it ain't broke don't fix it, but in my opinion an artist has to push the envelope and show growth and he just didn't do that enough. Though when I think about it TI hasn't really shown much growth either, maybe my expectations for Fab were just too high and he never met those expectations to me and I'm holding that against him.