Hi, in my old school days, some teacher tell us about “audio quality control” on the studio control room… so he insist on we used the best headphones we can… and make signal process to get the best possible sound… If we hear it well… the audience do it too… if they don´t have good speakers or amplifier… doesn´t mind… you are getting them the best possible quality…
So for the video it´s the same… you must work with the best possible monitor and of course if you are working in a hd video editing tool, you must use hd701 profile, IMO… in the same frame size aspect ratio an fps mode from your timeline.
I think it´s the best way to do our job, always in the best quality… after our job was done… we export in the required format for web tv… make a quality conversion… and just it.
(Sorry on my english spelling)