JeffriesTube, with your fetish for video technology buzzwords you should understand that the quality offered by all those services is awfull. They may claim HD, they may even claim 1080p, but the video is compressed so much that calling it HD is worthless. It may look better than non-HD streaming, but it still can't even compete with DVD.
When everyone has fios and can handle high quality streams, you may be able to convince me of an online streaming option. Until that day, the only thing I'd consider is a DVD/Blu-Ray subscription. And as Temis said, direct to dvd is for 3rd tier properties. As long as there is money to be made on TV or movies Star Trek will never go direct to dvd.