Not quite. According to wikiwikiwoo, basic 1080p under version 1.3 required a category 2 cable and that carried forward as High-Speed under version 1.4. Note monoprice 20-35' flat cables are Standard supporting only 1080i. So yeah, High Speed with Ethernet really is needed for current features to avoid gambling. Their price is not particularly higher but rather it just reflects current manufacturing and testing standards.
