Thanks for your comments guys!
I was not aware that you could undock the modules on O5 advanced. Alloy would seem to be a comparable choice if I wanted individual track processing,but maybe Alloy plugs-ins are not as good. The spectral graphing isn't enough for me to pull the trigger,unless it can help to pull off wonders I don't know about.
I have both Ozone 4 and 5 . I like the user interface better with Ozone 5 and IMO the interface is one of the strong points of the whole package,in the way that all of the mastering functions are integrated. I don't see a huge difference between the two though. I think some of the capability has been slightly improved but not by any significant amount.
Their marketing strategy seems unusual. Most software programs offer a much lower capable program and give you an easy upgrade to the flagship program. In the case of Ozone 5 you get a really nice program loaded with everything needed so that you don't really see the need for a huge upgrade price to get only a few more things...almost seems backwards to me.
FWIW a recent update of Ozone 5 took care of the cpu issues. I noticed a big difference after I loaded the patch.