I personally don't see the value in "subscribing" to software unless you're going to use it A LOT and need the frequent updates.
Personally I'm still using Wavelab 6. It works fine for me. I see no need to upgrade as I haven't seen any features in newer software that will help improve my recordings.
How did you decide on Audition? I've heard it's fine, but just curious what made you pick it vs. something else.
My reason for Wavelab:
1. Allows you to use plugins (I use Waves plugins to EQ and add compression).
2. Easy mixing of multiple sources.