Only now is sony losing it's fooding in the pro video market with the digital standard set up by JVC called MiniDV and DVCAM. Which is robust enough to handle the HD signals on the new HD camera systems.
MiniDV and DVCAM were NOT invented by JVC. In fact DVCAM is a SONY format. Also MiniDV isn't very robust (as far as professionals go), and isn't really used in Pro circles for HD. That said MiniDV has been doing well (for SD and HD) in the prosumer/consumer/low-end pro market, basically replacing VHS/SVHS/three-quarter inch, and what-not in those segments.
As for true HD tape formats, the best game in town (and not very expensive at that) is Sony. HDCAM is a MUCH better format then DVCPROHD100, and NOTHING comes close to HDCAM SR.
I don't like Sony (at least their consumer market stuff, Rootkits, so on and so forth), but in the pro-arena Sony really still has the tape format(s) in their backpocket.
AmadeusZ.-
