I'll comment since I was already involved in this conversation.
All IDC's have to teach to the PADI standards, hence you get the same class wherever you go, it's probably a good idea to look at the differences between IDC centers. Some people might see certain things as a positive or a negative. The last person who posted, thought that it was great that you lived, ate and studdied right there.. To me personally, that sounds like the twilight zone, I wouldn't want to be in the same place 24hrs to learn, eat, and study. I'd want to get out and unwind a little bit, so meals being included doesn't excite me, I'd rather sample a local restuarant and have more choices. Another difference is the location. Vero beach is a nice place, but it's not the Florida Keys. We go diving on world class reefs, and world famous shipwrecks. We've got dive boats on two different islands going out every day.
Anyway, the bottom line is both places have good Course Directors that will provide good training to have you passing the Instructor Exam with flying colors, otherwise they wouldn't hold the certification level of Course Director. You can't make a wrong choice, you just have to figure out what appeals more to you and go with that.
Good luck in your Dive Instructor career whichever way you decide to go.
D.J.