I probably would take Bynum. He has more upside still. Ask me after this season where we finally see him as a leader of a team
The position is pretty good. Think about how many teams have solid C's. While there's not as many stars, there are a whole bunch of very good ones. Dwight Howard, Andrew Bynum, Tyson Chandler, Andrew Bogut, Roy Hibbert, Brook Lopez, Greg Monroe, Al Jefferson, Joakim Noah, Kendrick Perkins, Chris Kaman, Al Horford, Nene Hilario, Marc Gasol, Demarcus Cousins, Emeka Okafur, etc.
There's a lot of young talent that could be really good too. Enes Kanter, Jonas Valancuinas, Andre Drummond, Bismack Biyombo, etc.
So while there's not Olajuwan, Ewing, and Robinson that's still a very good list of talent there. I think today's C's are just a bit under rated because with the rules of the NBA it does favor guards a bit more now. I think it could also be argued that PF is as strong as it's ever been, and there's plenty of those guys who will play C for short times during a game too.