I use Audition as well and I'm quite happy and comfortable using this program. I tried using other DAW like Cubase but I still go back to Audition. I think because it's a user friendly and good features. I've been using and v1.5 without problem and quite stable except that does not support ASIO, v2 supports ASIO but it seems is not stable I experience dropouts sometime perhaps hardware issues.
I think whatever DAW you used as long you're comfortable of using it and ur happy with its features then stick to it. I don't think there are major issues in sound quality comparing DAW softwares.
Music production is a "finish product" eg. wav, mp3,CDs. We don't normally share un-mixdown music that we worried of softwares compatability.