PC12 is in class of its own, NG makes it even better with superb glass cockpit designed to be flown single pilot.
Don't know about FL300 in Europe, as you would need RVSM approval and FL260 to FL280 is high enough for the plane performance wise anyway.
260kts TAS is normal with 350-400lbs FF at above levels giving > 6hrs end
Get it on the N or M-reg and no type rating required.