Maybe it can compare with the PNW but not with Alaska as far as rugged terrain.

Alaska certainly does not have the traffic dangers or congestion but it has every bit of ruggedness the northeast has times ten. I always thought the NE had mountains until I lived out west. The north west has landing strips with higher elevations than the tops of the north easts highest peaks.

As far as large turboprop time you can rule out the -400. I had a harder time in a 310 than the -400, it is a computer all you have to know how to do is input the numbers and keep it right side up.