If the company is the one I think it is up in my neck of the woods I've heard the progression onto the C90 is pretty good and genuine if you are a decent pilot willing to put the work in. As has been said, nothing wrong with a Caravan (except Capt Wally will probably come back and spot that it is missing an engine though!
). This industry is about stepping stones and it just might be the next best step to take but it's your call - goodluck!