I worked for Ameriflight, and I can speak as to how I saw it.
Prior to Ameriflight, I flew for 2 other freight operators. Both were shady. Maintenance was questionable, the planes were crappy, and both of those were run like flying circus more than anything.
Then I came to Ameriflight, and I was very pleasantly surprised. The training was EXCELLENT. Yes, their airplanes are old, but if I had a squawk, I'd write it up, and it'd be fixed... EVERY TIME. I'd get the plane the next day or 2 days from then.. and yes, the problem was fixed. I've never had any bad relationship with anyone there. I did have some questions regarding pay towards the end of my employment there, and I got the letter from Stu explaining how they calculated my pay (I was wrong) - he also thanked me for my service and wished me good luck at my new place of employment. These other flying circus outfits I flew for usually try to burn pilots down when they leave.
I was happy there, and I'd go back in a heartbeat.