I picked up Creed Humphrey early on, but sold him in advance of the end of Zero Chill because I knew his utility would take a huge hit without discounted AP abilities. Since then, I've used 95 OVR Alex Mack (who I also just sold with capitulation to the impending Team Diamonds crash right around the corner), and Redux Vintage LTD Country Strong was my C2. The attribute boost is the same.
There can't be that many Chiefs theme teams out there propping up Humphrey's value. Is it just that people didn't realize you could get the same boost at a tenth of the price?