Minimum Rest...
I sat the tests for Eurocontrol last May...It basically consists of 3 hours of computer tests that measure your English, maths, spatial reasoning, responses etc.
The first time I went I did Easy jet LPL to AMS (£50 rtn) then KLM to MST (£100 rtn).
When I went back for my interview I then went BA MAN to AMS (£69) and again KLM to MST (£100 rtn).
To make it more enjoyable, halfway thru my testing my laptop crashed
Hope this helps a bit
BT