Hi MrEd,
I recently bought Ozone4 and find it exceptionally good. I use it with Reaper (by Cockos).
For many years I used Cakewalk/Sonar Home Studio and, about 12 months ago, changed to Reaper after Sonar 7. One of the reasons that I changed was because Geoffrey Francis has written some brilliant books on how to get the most out of this DAW. It's different from Sonar but well worth the effort to learn. (It's only $40 for home use.)
I have found that the many plugins that come with Reaper are terrific but I wasn't able to find one that does the job the Ozone does when it comes to mastering.
If you want to hear my latest song that was made entirely with Realtracks, Reaper and Ozone4, it's here (it's still a work in progress but you're welcome to listen) ...
... link to latest song(Please note, the above link is a streaming one so it may take a few seconds to start.)
Regards,
Noel