You talked about signal security. Did you mean DSMX has better signal security than Weatronic even before boosting?
It has the ability to use FOUR antennas, and four separate receivers in four separate X Y Z planes, and in four different WELL SPACED positions in the aircraft. It is also uses DUAL frequencies (same as Weatronic), and frequency hopping in a pseudo random pattern. It has therefore a better ability to avoid multipath null spots, and have a receiver in the correct polarisation/orientation as well as having these spaced around the aircraft avoiding masking by carbon, engines, batteries etc.
So for normal range stuff, up to about a half mile it
is better. Weatronic however has better ultimate range. Since it uses the same 100mW RF output, (50mW + 3dB antenna gain), but has a higher gain receiver resulting in greater range.
So if I was choosing a 2.4 system for best RANGE, then I would go with Weatronic.
If it was for normal line of sight flying, with a fast plane, I would use a GOOD DSMX installation with 4 separated correctly spaced and orientated receivers.
But don't worry both are good!
If I wanted best of both, (range and ultimate security) I would use a 2 watt booster and DSMX with 4 receivers... And that's what I do use.
I would also consider a LRS such as EzUHF for long range. But even though frequency agile these do not reject interference as well. Because while DSMX is transmitting on 2 channels just a few percent of the time, along with most other 2.4 equipment, anything on the lower frequencies is "on" all of, or most of the time. So only one device can use a channel at a time. around 50 2.4ghz DSMX systems can use a channel at once and still work.