Kevin, you should download the Ozone trial and simply install and try a few presets to see if it immediately improves your mixes (I suspect it will surprise you how much better they sound!)

The trial is 10 days...software fully functional...comes with a ton of presets...no learning curve at all if you just try out the presets...so all you really have to lose is a couple of hours to download, install and check out the presets. If you like the result just keep your work and buy Ozone for the next CD!