I owned Sony 708, and very satisfied with its performance. Video is absolutely detailed with excellent colors when playing superbit ahem dvds.

I think HDMI dvdp like Sony, Philips, LG, Samsung, Pioneer in terms of PQ is more or less comparable unless you have branded & higher range dvdp like Denon or Oppo etc...but then they are sensitive to certain dvds especially low grade ones coz they are designed to choose the quality disc to maximise the output.