8 or 9 years ago, they were a good option. I think improvements in the technology may have bypassed them a bit. We were using those and dfwroadkill's (and others) versions of kit IR lights back when seeing 200-250 yards was considered pretty darned good and shooting over 100 yards was considered a bit excessive by many. Given the range and image detail in the video below, looking back, they weren't wrong. Part of the problem was the digital NV was not very good as compared to today. I went through probably 8 or 9 relatively inexpensive IR lights (all sub $120). Coyote Cannons were either new and not well refined at that point, or not available yet, but they were more than I wanted to spend. This is from 9 years ago...
Here lately, I have been fairly impressed with digital NV scopes and accompanying IR lights are often good out to 200-300 yards for shooting and certainly may see 500 or 600.
603Country, did you get an 850 nm light or 940 nm light? That can make a huge difference. 850s shine much farther for the same amount of energy input.