Samco
Samco has re-invented it self many times, in the old days, ten plus years ago, you wanted to stay clear, because they would hire anyone who looked like, walked like and talked like a pilot. I had the pleasure of talking to some Samco pilots on the Legacy in 2007, seemed OK, two months on, one off, good compound, but it was charter work. I saw the ad for the Challenger and it said part 91, so hard to tell. I worked for a Sheik from Riyadh who was part 91, but he sure had a lot of friends who flew everywhere else he didn't. Come to find out he was selling charter on the aircraft, But it was part 91??????. If you can negotiate a good contract, then it might turn out.
Best of Luck