I will buy 1 bomebox to connect:
1 / my mpc x akai in midi to my sq-6 allen & heath by the ethernet port
2 my ELZ-1 sonicware synthesizer in midi (mini usb port) to my mpc x akai.
I would like to know if the midi translator standart will be enough or if I have to buy the midi translator pro?
MIDI Translator Standard is pretty basic in its functionality. I also don't think you can use it to load project files onto your BomeBox as only MT Pro signs the project files. So if you want to load and use your own project files on your BomeBox, you will need MT Pro.
The below link compares the editions:
Bome Q and A Moderator and
Independent Bome Consultant/Specialist