first of all, before anyone correct you in a rude manner, its MIDEX not MEDIX (saying politely
)
Secondly, company is pretty ok. Flying goes up and down depending on contracts they get. Worst thing, you dont get paid if you are away on off days on the payday.
Their only 742 had an incident recently, and other two 742s are apparently in hangar for some checks somewhere in europe.
Also check out the Frieght Dog forums for the Midex Airlines post. Lots of useful (and Non-USEFUL) info available there.
All the best
CBAFIL