As far as 2.4ghz, these boosters are hard to beat for the money.. $50 (each) on eBay compared to the sunhans $74 (each). In the measurement pic, it's a TX measurement but the kicker for me is the 20dB RX it brings. RX is where it's at. Not kicking the sunhans at all.. they have their place in my set-ups. It's about finding the balance in the location your flying in.
I love the RF-Linx because of the AGC (automatic gain control) and the 20dB RX. The sunhans doesn't have AGC so output is solely based on the input received.. which can very well be the balance you need for your location. The RF-LINX takes an input and automatically adjust it's output to max performance without distorting the signal using built in filters to help filter out interferences. And that's why they just work great with these Omni antennas. But, I can pair the sunhans on the panel antennas and get a great performance in this location also. The difference.... Setting comfortably in a heated car and it 30 degrees outside.. and, it's a great sunshade.