From my experience - DONT BUY IT! I have purchased products from this company before (Write DVD & Write CDR) and their support and upgrade policies suck big time. They even expect you to pay for minor upgrades & bug fixes. Their product is very ordinary.
Your best bet would be to use Toast - it is unfortunately the best available on OS X.
I am a die-hard Mac user, but I find Nero in windoze the most versatile and reliable.