I had a read of that in the magazine as well as I was curious how they shaped up. We have the ESC and after a few wiring issues and issues with AL-KO we finally got the thing working as advertised. What I gleen from the article is the Dexter is a bit more sensitive than the AL-KO but has the advantage of switching off after 30 mins of no movement, also brakes the wheels independent as opposed to all wheels with the ESC.
There was a scary part for the ESC in that the author stated that on one side the caravan wheels were off the ground when the ESC grabbed the brakes and settled the van down, .2G is what mine says it's set to, one would hope all wheels are on the ground at that rate.
The bottom line is they both work and have the potential to save an accident.
Cheers
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Ex RAAF, now retired. EX Electrician/Teacher.
Homebase is Murray Bridge Tourist Park (in a cabin). New Horse.. 2020 Ford Everest Titanium, Jayco swan for touring.