I'm very keen for some dust to settle on some issues, as I understand that despite class D being well established it currently seems to be in an acceleration phase. How current is the release of AGD Tempo? There are at least a couple recent threads exploring this topic in one way or another, and I anticipate a lot more.
So, while Legacy/ICE, AGD and others (even "budget") are well received, I'm at that point where I'm in no hurry but will be definately seeking and looking forward to have to make a choice at sometime in the foreseeable future.
Another issue for a lot of people, including myself, is that these objects of desire are generally only available in the United States of America, and perhaps Canada and a couple other places. That reaches perhaps less than 10% of the worlds population. I trust that the technology may be licensed out to other manufacturers for it to become more widely available.