I'm looking at splitting a uhd hdmi output into four hd outputs on 3g sdi. An fx4-sdi is roughly £2200+vat, a fx4/h & 4x hdmi>sdi totals about £1700+vat, and a hdmi>12g sdi converter into a 12g>quadlink 3g split totals about £800+vat.
Are there any clear disadvantages to doing it the cheap way? Or in this particular set of circumstances are these all basically identical solutions?
(I know I'll lose the flexibility of non broadcast resolutions, and the 12g solution won't be expandable up to 7680x2160@30, but I can live with those two limitations)