@Mario ***********
As a rule you can only get a 6 month METV from a thai consulate in the country your passport comes from.
You meet the requirements posted for that visa at that thai consulate.
There are some consulates (NONE in S/E Asia) that will issue a 6 month METV to people who don't live in that country and the closest consulates that will do it are the ones in Australia (except for Sydney). Perth is the closest one.