I use a TwinStar and up run a GoPro up front with a Sony 600TVL behind and above it for the downlink, Range Video OSD and 1.3 Ghz.
I just bought the new yet to be released MFD 70" version of the TwinStar, it will get all the equipment transferred over except the power train as it's all going to be 4cell lipo instead of 3.