XJ is a great regional but with their current situation they have completely slowed to stopped hiring and are not planning on having classes for a while as well as have asked for voluntary leave of absences from some employees.
9E...there is a two page thread going right now on why it stinks there. I do not work there and know nothing about them besides the thread I just read but like every other regional in the universe, some are happy there, some are not.
As far as hiring is concerned you probably have a better chance with 9E if those are your only two choices.
Id suggest opening another thread in the regional forums asking for some advice for some more exposure from pilots who work at either airline. I do not work for either but have respect for both of the pilot groups and would go to either one myself.