It depends where you plan to go next.
If you want to go to an airline, then DA42 plus MCC will do nicely as you will not have to do a differences course to learn about silly stuff such as mixture levers and carb heat etc. (although why you should have to if you have flown something like the PA28 is a mystery).
If you want to get a job with an air taxi/charter outfit then the PA44.
Personally, I would DA42 - look forward, not back.