Multi recip v. single-engine turbine
Depending on your current quals, you might consider single-engine turbine. Turbine time is hard to get. If you already have decent multi PIC, say 300-600 hours, single-engine turbine might fill an important square on your resume. I have a friend who filled that square flying Caravan freight. He has something like 8000 total, 500 multi, and now 800 turbine. He has an EJA class date, which he credits in part to his Caravan experience.
On the other hand, if you're light on multi PIC, I'd go that route without question.
I'd be EXTREMELY careful about the right-seat time in the large turboprop. Be sure it can be logged legally and legitimately, or else it'll cause more trouble that it can help. We've had some good discussions in other threads on that subject.