I think the H3 is the best DVR out there, but I also never liked the VIP series and I haven't used a modern DTV box either. But again, I do prefer it to the Comcast X1, Tivo Bolt, all the Verizon Quantum hardware, older Hoppers, and the VIP series (which I always hated).
*edit* I don't use EHDs so I have no opinions about them and how they do or do not work with the H3.