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from the guy who designed the pagoda antenna:
They seem to have some pretty good stats, as well as having two sma connectors - each one for a different polarity - RHCP and LHCP in one antenna. which is helpful for me since i run LHCP on my planes and RHCP on my quads.
He doesn't plan on manufacturing them, but the design is open source, so other are starting to manufacture them.
i ordered one from here: