I voted for Bender.
I feel like he is a "where there's smoke, there's fire" scenario. More people seem to be coming out and talking abuot how unique a talent he is. High IQ, defensive versatility, passing ability, outside shooting. I also like what I have read from Bender directly. He has talked about how he is focused on the fundamentals and knows that when he comes to America he will have access to weight rooms and team doctors/staff that will help him bulk up. Seems like he is really dedicated.
He also fills a position of need in the modern NBA, and the Celtics could use a high upside wing or big man. The final piece I read recently stated that Bender has a body that should be able to add weight over time. I've seen people compare his body build to Pau Gasol when he came into the league. If we could draft someone who could have the impact that Gasol has had in his career with the third pick, I would be all over that.
Ultimately, I trust Danny, Brad, and company as they see more than any of us and have been around the game more, especially Danny.
Bender would be my pick, but I could see Danny taking Brown as he has very high upside, especially on the defensive end, and fills a position of need for us as well. I could live with it, but I would prefer Bender.