Pro-motion seems to be the most popular of the handheld "pole" harnesses. We have one coach at our rink that uses one fairly often - it seems to work really well for him.
My rink also has two cable-mounted harnesses on the ice,
one is this one and it's the one I prefer to use because the harness itself is MUCH more comfortable for me, it feels more secure and it's easier to adjust, but most of the coaches don't like it because the track cable sags more than our other harness, and there are different size belts that need to be switched out to use it on really tiny skaters, however I feel that that the cable issue could be fixed if someone really wanted to fix it... but it really hasn't been an issue for me, and swapping out the belts takes about 30 seconds, and again, isn't really an issue. I also like that one because it's not as close to the end of the rink, so I don't feel as much like I'm trying to set up a jump right at the boards.
I'm not sure what brand the other harness we have is, but I don't like it because to adjust it to fit my waist (admittedly I am bigger than a majority of the skaters at my rink using a harness, but not super huge) it puts the loop that connects it to the rope at just the right height to yank my hair out. The webbing on that harness is yellow, if that might help anyone identify it.