So I have been testing Logic 9 out on my Macbook Pro and so far so good. I have been loading old songs that have a good amount of plug-ins. So far East West Play looks good. I have a song that uses a 70 piece orchestra, chiors, brass, storm drums etc. It handled it very well. So I loaded up a another song that had 33 tracks. 14 vocal tracks, 19 midi tracks, 7 of them where Omnisphere. This is where I got the memory warning. It wouldn't let me play 1 out of the 7 Omnisphere tracks but everything else was good to go. Im not sure what to make of it not being able to play that one Omnisphere track, but hey so far this is better then I expected.
Just thought this would help the people who are still nervous to jump into SL/Logic 9.