Yes, I would recommend them. I use mine with the suction cup to the side of the indicator. That way, when viewing the aquarium from the front, the profile is much smaller. You don't even see the suction cup. Can't do that with my glass drop checkers. If you have a black aquarium background, you can paint the white outside part of the drop checker with black krylon paint. Haven't done that myself, but it's an option.
"Insanity: doing [or asking] the same thing over and over again and expecting different results."