I agree with Prpixel. I have have owned the AVM-20 for almost two years now. I would not sell this unit unless there was an emergency. The sound just keeps getting better and better over time....two channel analog direct/or digital and HT. I would highly recommend the AVM-20 if there is a cost savings involved in regards to choosing between the 30 versus the 20.
Good luck on your choice.
Good luck on your choice.