Installation nickel;

No worries.

It is always in line with Logic 8.

No particular concerns with the other things I have. (M Audio Sound Card.)
on the other hand, having only 2 GB of ram in utlisation with internal HDD is a bit limited, and we must pass over a 7200 RPM External ...

Manual fine, no worries particular.

SUITABILITY/PERFORMANCE

MacBookPro 2.4 g - 2 G of ram. - Say internal 640 G in 2 partitions.
M audio sound card, internal or core when I'm away from home ...
Perfomance correct, but I think of that 2 GB of ram are a bit lighter.
Apart from this restriction of ram, and internal hard disk 5400 rpm, the rest works well.
For now not crash unlike my older version of Logic 8 Express .... The solution logic studio 9 seems more stable.

OVERALL OPINION

Since July 2010.
I could go through Hard 3 and 4 at the time Emagic.

And Digital Performer 3, 4 and 5.

Cubase, and quickly abandoned ProTool (old version) soon dropped too ...

To find a product that is stable is important to me.

I would do this choice