I just got a PHD-8VX, which looks like it does some of the same things the Edge does, but it's quite a bit cheaper. I have a couple issues with my unit, but I've had PHD items in the past, and the support has been really good. The same guy answers all my emails, and the phone, he picks right up, no automated phone system. I know the Edge has a better processor, and may look into getting one if my issues with the 8VX can't be resolved, but $499 is a bit steep for my old HD CRT. I just thought I'd pop in and give a heads up, as I haven't seen the 8VX mentioned in this thread since I started following it.
Give a man a fish; you have fed him for today. Teach a man to fish; and you have fed him for a lifetime