airman, I see you are nearly 40. If you want to move on to a jet at some time, I would take the jet job now before people tell you you're too old. Normally, they won't be interested in your training history when you go to another company, they will have their own training team, with their own ideas. The ATR doesn't offer much more scope than the A310 job wise, both in limited use within Europe anyway these days.