Ive been a fan of Roku for well over a year using their internet radio and now the Netflex streamer. I joined Netflix based upon their affiliation with Roku. (I have no affiliation with either.)
Over all Im very happy with the product and would recommend it to everyone.
Although it offers wireless connection to your modem, Im using the Ethernet connection to insure the best possible data transmission. Im outputting the video stream to my HDTV using HDMI. Additionally I stream the audio portion to my external dac (via Toslink to my Wadia 830) connected to my 2 channel stereo.
Video quality is as good as standard DVD, depending upon the original movie quality, and the same holds true for audio.
My only complaints lie with Netflix and not the player itself. Newer movie selections and HD (blu-ray) are only available on disk. That being said Netflix has a large vault of older movies and a great selection of music (concerts and documentaries). Gone are the days of brick and mortar DVD rentals.
Tony