Hi,
Mavericks will be out pretty soon, on Autumn. How is Access going to support Mavericks - I hope you have been busy developing Mavericks compatible version since the developer releases? And how about Logic Pro X (haven't tried it yet)?
When Mountain Lion came out I had problems with Logic Pro 9 and Virus software... I had my system reinstalled afterwards and I have been sticking with the good ol' Lion 10.7 since. Seems I have to update to Mountain Lion now to get to try Logic Pro X. For what I searched in here forums, you seem to have resolved those compatibility issues.