Hi!
Getting a Mac is always a good move.
I've got two here. Both work like a charm. Fast, reliable and easy to use. No issues with viruses or security. None!!!

Yes you will be able to use MS2000 as a controller. More so it's got knobs and you wil be able to use them to control and edit your soft synths and instruments.

-ED-
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A gentleman is one who never hurts anyone's feelings unintentionally.
- - - Oscar Wilde