Vonleh would be my preference at pick #5 and above. I've been intrigued by his potential for much of the NCAA season, and as a result found myself searching for a lot of Indiana games to watch. I got a taste of the good and the bad of Vonleh that has been discussed, but also, unfortunately I feel like him playing for Indiana did more to hurt his cause than help it. Tom Crean appeared to have NO idea how to use him, and they had a bunch of chucker ballhogs who would run the offense for stretches of like 10 minutes at a time where Vonleh got zero touches on the offensive end. That said, he definitely seems raw on both ends in the post, and is less NBA ready than some of the other 2014 draftees are.
On the positive, He's got size, he's an excellent rebounder, has good hands, and has a silky smooth shooting touch when facing the basket that already extends beyond the 3 point arc. Additionally, I think the "he's not athletic" rap is unfair. I agree that he's not a vertical player, but he seemed extremely agile to me when I watched him and has quick feet. When he'd end up in a mismatch with a guard, he always looked very comfortable, and was able to stay with his man. I could see him becoming an excellent positional post defender with enough length and girth to block shots, albeit without the swatting proficiency of say a Dwight Howard-type center (similar style to an Omar Asik maybe?).
On the negative side, he is very raw and rough on both ends in the post. While athletically there were many times where he looked graceful, there were just as many times where he looked clumsy and unsure down low. I want to blame some of that on Tom Crean, but I do think that's where the "bad feel for the game" and "low BBIQ" criticisms kick in and are definitely real factors as to why he has more bust potential than other guys IMO. He's more high risk/high reward.
Finally, his intangibles are supposed to be good. From what I've heard he is a smart kid, a gym rat, and is very coachable. Those factors are why I'm optimistic he can improve on the definite holes he currently has in his game and would take a chance on him at 5 over Randle and Gordon.