I flew the the SD330 and SD 360 for about a year in 2003 for a night freight company amusingly called "Streamline". The P&W PT6 was a pretty reliable engine. The flight deck was surprisingly spacious with individual crewmember doors which made us laugh.
The aircraft itself was very cold to operate in winter as it being non pressurised, it leaked like a sieve in wet weather and a lot of the insulation was taken out. Boxes don't care.
The cargo fire ex system was basic. The antiskid system were maxarets, same as the Hawker 800 I later flew.
Good first job.