Scanafrica
Nothing scientific about my answer.
Have worked for a couple of the mentioned companies, and still have friends working at all of them. The answer is based on my experience, and on those of the guys and dolls employed by said companies.
The long answer!
Comair - solid company with good management, good package, excellent training. This is the only one of the four that I would consider as a career employer. Although old, the B733 and B734 makes you more marketable.
SAX - always concerned about top management and connections to SAA, good package, excellent training. The aircraft are nice to fly, but not desirable on a CV. Should be a stepping stone to something else. If they were financially viable without cross subsidies, SAA involvement and tax payers money, they would be a good first choice. Cape Town base is a plus!
Mango - does not sound like a happy bunch, iffy management, but GOOD aircraft. Transient employment at best.
1Time - started by a disgruntled Comair employee, a stepping stone to something else. I rated them as equal to Nationwide - good but financially shaky. In my opinion they will be the next to go if the economy turns and fuel prices started to rise, as they will. DC9 and MD 82 time - not desirable.
Helmet is on - let rip!!!

