I've watched them all. Adams, Tisdale, and Griffin were the Big 3, and now Trae is playing himself into the mix. Some of you have mentioned Buddy and he's on the cusp. One player nobody has mentioned is Don Sidle. He was a 6'8" forward who was a first team All-American back in '67 and '68 where he averaged 23.7 and 19.8 ppg in an era where teams didn't average 50 ppg. He was a first round NBA pick but played his professional career in the old ABA. In fact, Sidle is 1 of only 3 Sooners to average over 20ppg ..... behind only Wayman and Adams. Unfortunately, he had some health issues and died at a very young age.
Adams is a no-brainer. He created as much excitement as Trae has before he ever played his first freshman game. I watched that first game where he had 28 rebounds and the old field house was packed. He averaged 23.4 ppg over his OU career before leaving early for the NBA. He was the 4th pick in the draft and was the Rookie of the year, and made the all-NBA first team as a rookie.
I would rank the Big 3 as Wayman, Adams, and Blake in that order.
If you're talking about Hollis Price and Najera, you should also include Garfield Heard and Clifford Ray who both had long NBA careers. Mookie was a better guard than Price .... but not nearly as charismatic.
Another player nobody has mentioned was Harvey Grant who played at OU only 2 years but averaged over 19 ppg and was on the '88 team that was the NCAA runner-ups and went on to a long NBA career.