MAT is def more desireable to work for - less local influence if you know what I mean. Owned by a Danish racing driver with a Sri Lankan and Canadian in next senior positions. They fly to the top resorts.
TMA still has a few to many locals involved (incl owners) so its a bit political - Dutch guy in the top position is tough I hear (prev was a Canadian).
For what its worth MAT standards are considered higher - in every aspect!!!