zlakarma, I donīt understand why the comparison between a new PC12 and an very old design with comparatively little numbers built.
Why not look at a good KingAir B200? With Raisbeck mods, maybe a Blackhawk mod, Winglets and retrofitted avionics, preferably after S/N 1476 (the new cabin interior), you can get a very good example at a substancially lower price than a new PC 12 and enjoy twin engine safety. The PC 12 is surely a good aeroplane (haven't flown one), the B200 I know inside out and it is - IMHO - one of the best airplanes one can buy in its class. Sturdy, big, easy to fly, good reliability, good looks...
Yes she sips a tad more fuel than a AC, but one can actually talk to each other when sitting inside. And only one thing is better than a PT 6 - two of em! P&W dependable power.
Do yourself a favour and buy an airplane where you can get simtraining. Even if you are not flying yourself, then have your pilots do it. THAT is the best investment on safety you can make.