Sorry I've never heard the Dynahi. From what I hear you can't go wrong with either choice.
I can tell you that the Thunderpants sound sublime on the Beta22.
I know I keep shilling Hyundai, but the new Sonata is a real looker IMO, and is getting excellent reviews.
Hyundai Sonata: Safe Family Cars - Better MPG than Camry or Accord | Hyundai
Uhm yeah, Ryan as in Fitz.
Fitz is a close friend (and especially now) and I like to call my good friends by there given name, as I feel that's more personal, but I should just say Fitz for clarity sake.