My Two cents...The Ring Brothers are who thought up the hinges and everyone else copied them. I would much rather support the guy that thought of it and not reward the guys that copied him.
If it was you that thought it up, who do you think should get the support and business ?
I bought a set from Eddie Motorsports and they're a very nice quality, but don't open enough on my shoebox. Don't know whether their Camaro hinges open any higher but EMS were great to deal with. Just my 2 bits on another option out there.
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Kirk
67 Convertible LS7 BBC 542HP.540 TQ
400 Turbo, 12 bolt posi, 13"12'' CPP Disc, Hotchkis connectors, belly pan.. Hush matt. 3" mandrel bent and load of other stuff.. More a show an Go..