Is the GeoHelix Antenna still used with the APM2's 10hz GPS Reciever?

I am looking into the cost vs return for increasing the 10Hz GPS that the APM2 comes with (standard). I have read on past threads that using this: http://www.sparkfun.com/products/9871 greatly increased sensitivity.

I've not heard much about it since the APM2 came out, what advantage would using that antenna give me for 22 bucks?

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