I'm looking at that one as well as the synergyreef.com sump. The problem with the trigger sump is that the skimmer section is tiny. Otherwise it'd be a no brainer.
https://www.bulkreefsupply.com/triton44-sump-trigger-systems.html
Overall Dimensions - 44" L x 16" W x 15" H
Refugium Section - 22" x 15.5"
Skimmer Section - 9.5" x 15.5"
Return Section - 6" x 15.5"
Versus the synergy sump:
https://synergyreef.com/product/ts-44-triton-style-refugium-sump-4/
Dimensions: 44″ long x 18″ wide x 18″ high
Refugium Section: 13.25″ x 17.5″ (Approximately 17 Gallons)
Skimmer Section: 16.25″ x 17.5″
Return Pump Section: 6.75″ x 17.5″
But I'm leaning towards the traditional filter sock version.TThe refugium area is only 10" but they can adjust the dimensions of that and the skimmer section to whatever you want from my inquiries.
https://synergyreef.com/product/synergy-reef-cl-44-sumps/
Dimensions: 44″ long x 18″ wide x 18″ high
Skimmer Section: 27.5″ x 17.5″ (without Optional Refugium)
Skimmer Section: 17″ x 17.5″ (with Optional Refugium)
Return Pump Section: 6″ x 17.5″