I've been using Europa quite a lot since it appeared in the Reason rack, and I love this synth.
Now the Propellerheads have also released Europa as a VST/AU plugin:
(One can even try the Europa synth directly in the web browser, cool)
So I loaded it up in Renoise and it feels really snappy and not so taxing on the CPU. Lots of nice modulation possibilities.
Simply feels great to have Europa in Renoise!