Has anyone here tried these antennas?

[HWCM]

Extended Range Modification Antenna set for DJI Phantom 3 & Inspire 1 RC O3J1
Are they any better than the stock antennas? If so how much better in your experience? Are they better than the windsurfers?
Thank you in advance for your replies.

 

[Mark The Droner]

Search ARGTEK antenna, these look very similar...

 

[HWCM]

I saw those. They are three times as much. These are just flat panel antennas. They are pretty much all the same. I have used them on other quads. I was wondering how they perform on the phantom, maybe compared to the windsurfers.