I noticed that thread some days ago but I only got through page 1 I'm afraid.
It didn't seem to adress my specific problem, but now I can see that it actually does on the following pages
I'll have a closer look at the thread, but my imidiate conclusion is that AA is still a much heavier engine than SONAR, which unfortunately means that it's much to early for goodbyes to the latter.
My computer is centrino based, 1.8 gHz cpu with 1 GB RAM and 2x60 GB hardiscs.
Thanks a lot for your reply and the links.