For future investigation...
Photohigher AV130 Tilt-Roll Gymbal
700 pounds
Photohigher AV200 Pro Camera Gimbal
$950
All CarbonCore mounts
Naza Flamegear
all mounts
AG550-NX Landing Gear+2 Axis Camera Gimbal
Cinestar 2 Axis Gimbal
MC6500PRO 2 axis camera mount
$189
MC 6500 V3 dual axis cam mount
another review
DS01 Gimbal for DSLR Camera
$299