Best sectors to cover?

Hi I'm going through a number of interviews for ER at a couple BB and was wondering what people thought would be the best sectors for a first year associate to cover in terms of deal flow, ease of learning curve, exit ops etc. Obviously this wouldn't affect my effort in the interviews but if in the end I had a choice between two or more offers it would be helpful to know. Currently I've applied to transport, internet and biotechs while other programs don't specify the groups yet.
Thanks!