Thanks to everyone for their replies. Unfortunately, the Aqua C Remora is just out of my price range.
I was originally leaning towards the Prizm/Emperor pair over the Bak Pak. Then I read the instruction manuals for both skimmers at the manufacturer's websites:
From reading the instructions for the Prizm, it seems that adjusting for the water level is not critical. Just keep the water level above the strainer. The collection cup isn't adjustable anyway.
However, it seems that adjusting the collection cup for the Bak Pak at 1/8" can be dicey if the water level is not constant. What happens with its efficiency as the water in the tank evaporates over the course of a day or two between topoffs? I've never used a skimmer before.
I guess I was leaning toward the Prizm because of laziness.
Now I am leaning towards the Bak Pak.