Financial Controller @ ibank (MS)

hey everyone, first time posting here. =) soo just had a question about a financial controller SA position i'm going into this summer. I just wanted to see if anybody knows the controllers within your specific groups and whatever else you've heard about that specific position, being a controller within a bb ibank (overall satisfaction, competition, prestige, career path etc).

Also, they've asked me to list my preferences within the various divisions (ISG - institutional securities, AM, GWM, corporate reporting, global), I was wondering what area would give me the most exposure to the overall market and experience in order to have the best background for future financial positions as being a controller isn't exactly what I plan to stay in for the long term. Thanks in advance for all your help!