As a former QR(so the MAINLINE) Skipper.
Only advice - stay away from the Qatary suckers. Mainline was already bad, heard terrible stories about QR exec(of course, such a surprise). And yes, all the bad rumours are actually NO rumours.
Worked up a bit in this thread - was an airliner from the beginning, did a 8 year gig in the hellhole called GA and returned crying to airlines. Now C212 whatever thinks that GA command hours are worth anything in Airlines. Well, in high demand times(which are just ending right now, so forget about it for the next 6 years+) it is true. Airlines will take EVERYONE who can prove that he did command anything with wings. If the **** hits the fan(which usually happens every 6-7- years and everyone in aviation business is surprised about it, yes, did already a couple of this cycles) nobody cares about bizz jet drivers. Be it left or right seat. Only (limited) way of getting a job is being an actual airliner with tons of hours on the LEFT seat. Point. Right now it is a good time to get a job WHERE you actually want to stay for the next couple of years. Because winter is coming(lol).