ASTD TechKnowledge - DevLearn Conference

I just received a question that I'm sure often is on the minds of people in eLearning - which conference they should attend (eLearning Guild DevLearn or ASTD TechKnowledge). I'm hoping that everyone can weigh in on their thoughts. Here's was the specific question (and all the information I have to go on) to help advise this person -

I have been trying to decide whether to attend DevLearn 2008 or ASTD TechKnowledge in 2009. I have never attended either. I have been designing and developing elearning for about a year. Any suggestions?

This person works in health care in employee learning and organizational development.

So, which would you choose and for what reasons?