NZ44,
I have been flying 208s for the last six months in the top end...
If you're talking from a career perspective you are better off taking the multi, turbine time is appreciated but it's something you can work on down the track.
If you really want the most out of the 208, I suggest logging a few hundred hours, maybe 300 or so then you have the in's and out's of how turboprop engines work before chasing the multi. From what I have seen it doesnt seem operators ask for more than 500 or so turbine. (unless you're applying for airlines).
The caravan itself is a wonderful aircraft to fly, reliable engines (PT6), generally upholstery is a lot better, everything works and great takeoff and landing performance (that being mainly due to reverse thrust availability).
208 has excellent ground speeds too compared to the bongo!